MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Growth of short rodshaped carbides
Formation behavior of long needlelike M23C6 carbides in a nickel
2020年4月25日 In this report, we reveal the evolution of the microstructure and properties of a nickelbased heatresistant alloy without γ′ phase at 675 °C for a long time The evolution of 2016年7月13日 Here we present an SEM, TEM and EBSDbased investigation to explain the processes of martensite lath coarsening and the migration of the subgrains at high Coarsening behaviour of M23C6 carbides in creepresistant2023年5月1日 Finer secondary dendrites and shorter carbide growth times in steels with higher nitrogen content prevent sufficient growth of independent fibrous (rodshaped) carbides As a Effect of nitrogen content on the precipitation and growth With increasing cooling intensity, the primary carbides change from skeletonlike shape composed of many ˜ne clusters to skeletonlike shape composed of regular and short barlike crystals, Effect of Electroslag Remelting Parameters on Primary Carbides in
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(PDF) Characterization of M23C6 Carbides Precipitating at Grain
2016年8月12日 Characteristics of the formation, the interfacial structure, and the defects of M23C6 carbides in 100Mn13 steel after 1323 K (1050 °C) solution treatment and subsequent 2021年11月5日 The results show that there were large lamellar and fibrous Mo 2 C and a small amount of VC in the ESR ingot Mo 2 C are metastable carbides, which can be decomposed Precipitation Behaviors of Carbides in High Speed Steel during ESR 2022年11月8日 The threedimensional morphology of primary carbides is blocky, spherulitic, fibrous, and short rods Xray diffraction results show that primary carbides are M7C3 Formation and evolution of primary carbides in highcarbon 2021年11月2日 Results show that the growth and coarsening of the precipitated M7C3 carbide phase undergo the following process during isothermal aging: first, a single precipitated phase Growth and coarsening of eutectic M7C3 carbide in Fe–Cr–C alloy
Effect of Carbides on the Thermal Stability of Cr3 and Cr5
2022年9月28日 The change of time alters the proportion of various forms of carbides in the process of the thermal stability experiment With the extension of time, large spherical 2016年9月6日 The microstructure of the hypereutectic FeCrC alloy is observed by optical microscopy (OM) The initial growth morphology, the crystallographic structure, the semimolten morphology and the Growth characteristics of primary M7C3 carbide in Nature2022年9月28日 The carbides after 64h insulation are primarily needleshaped with a size of 100300 nm, short rod shaped with the size of 50200 nm and spherical M 23 C 6 carbides with the size of 250500 nm Table 3 Carbide morphology, size, and type of the two test steels after tempering at 600 °C for 16 hEffect of Carbides on the Thermal Stability of Cr3 and Cr52016年8月12日 The results showed that the morphology of grain boundary carbides altered from chainlike to semichain short rod by the solution treatment, and the phase composition changed from a large amount (PDF) Characterization of M23C6 Carbides
Precipitation and Strengthening Behavior of M23C6 Carbides in
2022年9月22日 HighCr martensitic heatresistant steel has been widely used in highparameter thermal power units because of its excellent mechanical properties and oxidation resistance Microstructure evolution and mechanical properties of G115 steel after different tempering were investigated Meanwhile, the precipitation and strengthening behavior of M23C6 carbides is 2016年8月25日 The solidification microstructure and primary carbides in stainless steel 8Cr13MoV produced by electroslag remelting (ESR) were studied The microstructure is finer when ESR using lower current Effect of Electroslag Remelting Parameters on Primary Carbides 2021年4月14日 There are few rodshaped carbides, which are calibrated as M 7 C 3type carbides with a crystal belt axis of a small amount of carbides show short rodlike or chainlike, The growth rate of carbides in the steel is in the order of group D > group F > group E when the spheroidizing time increases from 90 to 135 minEffect of Heat Treatment on the Carbide in Steel SpringerLink2016年7月13日 The strip shape or rod like carbides and elliptical shape or coarse shape indicated by the brown arrow are chromium rich M7C3 carbides and M23C6 carbides as presented in the literature, the (PDF) Coarsening behaviour of M23C6 carbides in creep
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Effect of Solidification Condition and Carbon Content on the
2014年6月1日 The morphology of MC carbide shown in Figure 4 was short rodshaped, while M 2 C carbide was discshaped with multiangles MC carbides precipitated along preexisted austenitic grain boundaries [20]2022年4月18日 After LR, the short rodshaped carbides formed in the cladding layer were fragmented (as indicated by the red arrows) Therefore, even when a lower power LR was used to obtain more undissolved carbides, the epitaxial growth of columnar crystals was not be eliminated, as shown in Fig 4 e and h Nevertheless, Effect of laser remelting on the microstructure and mechanical there are two arrowshaped carbide particles Note Figure 1 General microstructural features of carbide particles at different growth rates Note that carbides show similar geometry and mainly two types of particles, namely elongated or rodlike type; more equiaxed and blocky typeEffects of growth rate on carbides and microporosity in DS年9月1日 There are 3 phases in superally IN718, ie granular phase γ', discshaped phase γ′′, and needlelike/short rodlike phase δPhases γ′, γ′′ are the main strengthening phases, while phase δ has effects on grain growth, creep properties, and fatigue properties of the superalloy [1]The composition of each precipitate, precipitation temperature, and dissolution temperature Phase transformation and grain growth behaviors of superalloy IN718
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(PDF) Chemical Composition and Morphology of
2012年1月1日 Carbides with high hardness in the matrix have been shown to improve erosive wear characteristics in FeCrC alloys Insitu experiments to observe the characteristics of nucleation and growth of 2019年5月30日 Abstract Alloy 602 CA is a M23C6 carbides strengthened Nickelbased superalloy In this alloy, M23C6 is different from that found in other superalloys because of its high volume fraction, wide size distribution and distinct precipitation locations To investigate M23C6 evolution behaviors during hot deformation in Alloy 602 CA, a series of tests are carried out in Evolution Behavior of M23C6 Carbides Under Different Hot 6 Specimen Configuration, Dimensions, and Preparation61 Both the round short rod specimen and the rectangular shaped short bar specimen are equally acceptable and havebeen found to have the same calibration (5) The short roddimensions are given in Fig 1; the short bar in Fig 2Standard Test Method for Short Rod Fracture Toughness of Cemented Carbides2021年11月5日 The average diameter of the carbides is reduced to 128 μm and the space distance is reduced to 323 The morphology of MC carbide shown in Figure 4 was short rodshaped, while M 2 C (PDF) Precipitation Behaviors of Carbides in High Speed Steel
Formation behavior of long needlelike M23C6 carbides in a
2020年4月25日 TEM morphology of intragranular M 23 C 6 carbides after aging for 5000 h: (a) vertical long needleshaped M 23 C 6 carbides were formed on the {110} planes, and short rodshaped M 23 C 6 carbides were formed on the {100} planes, (b) magnified view of Fig6a; (c) and (d) high resolution TEM images of long needlelike M 23 C 6 carbides61 Both the round short rod specimen and the rectangular shaped short bar specimen are equally acceptable and have been found to have the same calibration (5) The short rod 1 This test method is under the jurisdiction of ASTM Committee B09 on Metal dimensions are given in Fig 1; the short bar in Fig 2Standard Test Method for Short Rod Fracture Toughness of Cemented Carbides2023年6月12日 61 Both the round short rod specimen and the rectangular shaped short bar specimen are equally acceptable and have been found to have the same calibration (5) The short rod dimensions are given in Fig 1 ; the short bar in Fig 2 62 Grip Slot Depending on the apparatus used to test the specimen, a grip slot may be required in the specimen Short Rod Fracture Toughness of Cemented Carbides12024年9月1日 At 650 °C for 100 h aging, in addition to the dispersed γ′ precipitates, there are also some short rodshaped carbides With aging time extended to 500 h, the carbides gradually dissolve into the matrix, and from 500 h to 2000 h, the γ′ precipitates are present as fine, dense spherical particlesGrowth and dissolution behavior and morphology evolution of γ
Multiple morphologies and twin structure generated by a definite growth
2024年1月1日 They occupy more grain boundary space, each presenting a shortrod morphology and tending to connect to adjacent carbides, just like carbides A and D in Fig 6 Besides, carbides A and D at the grain boundary hinder the growth of carbides on the opposite side, which develop a particlelike morphology and fail to connect with each other along the During solution treatment, the uneven region of the rodshaped M 6 C dissolved more quickly, leading to the formation of shortrod carbides With further prolongation of the holding time, the shortrod shape carbides further dissolving into the matrix and formed spheroids, which was related to the low surface energy of spherical carbides [43]Microstructure of a novel NiCrWMoV containing ductile iron 2022年9月1日 Keep increasing the temperature to 1596 K (Fig 3 (c)), the shape of austenite dendrites can be seen very clearly, because the melting point of M 7 C 3 carbide is lower than the austenite, When the growth space is relatively small, the aggregate growth of rodlike carbides in 3D has the potential to form platelike carbides in 2DInsitu observation of growth characteristics of M7C3 carbides in 2023年3月27日 Besides, the number and size of the featherlike upper bainite gradually increased from the top to the bottom of the deposition, and the morphology of martensite changed from lathshaped to islandshaped Two types of carbides morphology existed in lower bainite at the top of 20 layers (312 mm) sample: a short rodshaped with an angle of 5560 Effect of Deposition Thickness on the Microstructure of Laser Solid
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The stepped growth mechanisms of microsized hexagonal M7C3 carbides
2023年4月1日 Geng et al [17] believe that the longitudinal growth rate of primary M 7 C 3 carbide is much faster than the transverse growth rate, so the rodshaped carbide is formed Recently, Barnes et al [ 18 ] established a diffusioncontrolled growth model for the longitudinal direction of primary M 7 C 3 carbides by modifying the dendrite growth models2024年2月19日 Largersized primary carbides lead to stress concentration during the application of H13 hotwork die steel, resulting in microcracks and fatigue failure Rare earth was usually added to modify the carbides and inclusions The existing literature is reviewed on the effect of rare earth on primary carbides in H13 steel A comprehensive review on the effect of rare Effect of rare earth on primary carbides in H13 die steel and their 2019年2月14日 Previously (Ref 18), the xray diffraction and SEM/EDX study of electrochemically extracted residues revealed the presence of M 23 C 6 carbides and MX carbonitrides in asreceived steel and after thermal exposure at 600, 650 and 700 °C Additionally, Laves phase is found in steel thermally aged at 600 °C The nanosized MX carbides enriched Evolution of Crystallographic Structure of M23C6 Carbide2020年11月1日 The growth of Laves phase occurred by migration of the last interface producing the bulkyshape Laves phase particles instead of rodlike shape particles (Fig 7 d,g) These particles were susceptible to coarsening As a result, at 160 MPa, the major portion of Laves phase was the spheroidized particles (Fig 7 d)Nucleation of Wrich carbides and Laves phase in a Re
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Evolving Mechanism of Eutectic Carbide in Ascast AISI M2 High
tic carbide Rodshaped carbides kept the original pattern basically, and necking occurred gradually at some positions As shown in Fig 3(b), reheated at 1 423 K and held 30 min, most rodshaped carbide broke down into long and short segments As shown in Fig 3(c), reheated at 1 423 K for 60 min, the rodlike construc2024年2月13日 This study aims to investigate in situ the threedimensional (3D) morphology and distribution of primary carbides (PCs) in electroslag remelting (ESR) forged 30Cr3Ni3Mo2V steel A facile nonaqueous electrolytic etching method was applied to prepare 3D PCs on the matrix The morphology, composition, and element concentrations of PCs were characterized using a Morphology and Distribution of Primary Carbides in Forged CrNi 2021年4月22日 When the quenching temperature is higher than 910 °C, except for short rodshaped carbides, some long stripshaped carbides precipitate at the boundaries The higher the quenching temperature is, the more long stripshaped carbides precipitated at the boundaries, as shown in Fig 6, Fig 7 ef (white arrow)Effect of initial martensite and tempered carbide on mechanical 2021年11月5日 The morphology of MC carbide shown in Figure 4 was short rodshaped, while M 2 C carbide was discshaped with multiangles Due to the precipitation temperature being low, the time for nucleation and growth is Precipitation Behaviors of Carbides in High Speed
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On the microstructural origin of premature failure of creep
2021年10月10日 The rodshaped M 23 C 6 carbides are aligned in two parallel groups, and the angle between the two groups is approximately 60° It is reported that M 23 C 6 carbides have a certain crystallographic orientation relationship with αFe matrix: (110)αFe//(111)M 23 C 6 , [ 1 ¯ 10]αFe//[ 2 ¯ 11]M 23 C 6 [ 28 ]2023年4月12日 For the QT940 sample, the shape of these carbides changes from short rod to long strip, as shown in Fig 8 (d) (blue arrow); however, there are still some short rodshaped carbides and a few spherical carbides in the matrix There exist more long stripshaped carbides along with a few short rodshaped carbides for the QT990 sampleEffects of quenching temperature on the microstructure and 2010年9月3日 Download Citation Growth characteristics and mechanism of carbides precipitated in WC–Fe composite coatings by laser induction hybrid rapid cladding WCreinforced Fe matrix composite Growth characteristics and mechanism of carbides precipitated Download scientific diagram Insuit observations of the primary M7C3 carbides growth process: from publication: Growth characteristics of primary M7C3 carbide in hypereutectic FeCrC alloy Insuit observations of the primary M7C3 carbides growth
On the transition of short cracks into long fatigue cracks in
consisting of prior austenite grain in which the carbides are distributed inside and outside the ferrite (αFe) laths M3C type coarse carbides are precipitated along the αFe lath boundaries whereas, M2C type fine carbides are distributed inside the αFe laths Rod shaped carbides are also distributed along the prior austenite grain boundariesEven a short annealing time (3 h/800 °C) causes the carbides to grow preferentially on the grain boundaries and the martensite lath boundaries (Fig 2b) Besides the carbides’ growth, the Coarsening behaviour of M23C6 carbides in creepresistant2018年2月8日 specular rod, see Fig 1 e distinct shape around the minimum at L = 14 is perfectly described by a model in which the Ni(111) surface is fully covered by a (2 ML carbon) graphene layer e Role of Precursor Carbides for Graphene Growth on Ni(111)2021年1月1日 The morphologies of the carbides are primarily blocky, sheetlike, rodlike, smallsized Chinese scriptshaped in the intergranular region, while those in the intragranular region are predominantly sheetlike, rodlike, largesized Chinese scriptshaped The growth mechanism of carbides is mainly attributed to the enrichment of carbideforming Effect of withdrawal rate on precipitation ScienceDirect
a) Initiation of cracks and cracking of carbides and b) growth of
Download scientific diagram a) Initiation of cracks and cracking of carbides and b) growth of cracks using carbides (cementite) path, (c–d) growth of cracks using carbides and graphite