Effect of heat treatment on microstructure and impact toughness of a Tungsten-Molybdenum powder metallurgical high-speed steel

Lyu, Cheng; Zhou, Jianyu; Zhang, Xianglin; Yao, Yao; Zhang, Yafei

doi:10.1016/j.msea.2021.141268

Cited by 28 publications

(23 citation statements)

References 40 publications

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“…Previous study proved that PM20 mainly contains martensite, M 6 C and MC after quenching and tempering. [ 20 ] M 6 C is a carbide consisting of Fe, Mo, and W, while MC is a V‐rich carbide corresponding to the VC. The XRD analysis of samples with different tempering temperature are shown in Figure 2 .…”

Section: Resultsmentioning

confidence: 99%

“…VC has a semi‐coherent interface with martensite, while M 6 C is incoherent. [ 20,28 ] In addition, the size of VC is smaller than that of M 6 C (Figure 7). It is reported that smaller precipitates have strong conhesion with matrix.…”

Section: Discussionmentioning

confidence: 97%

“…[13] Sun et al studied the heat treatment temperature on the mechanical properties of M3:2 HSSs, they found that proper temperature can increase the wear resistance. [19] In our previous work, [20] the characteristics of carbides and martensite matrix of a PM HSSs PM20 have been studied. But the influence of tempering temperature on carbides and matrix of PM20 is lack of research, and the role of carbides and matrix in wear property is still unclear.…”

Section: Introductionmentioning

confidence: 99%

“…In our previous work, [ 20 ] the characteristics of carbides and martensite matrix of a PM HSSs PM20 have been studied. But the influence of tempering temperature on carbides and matrix of PM20 is lack of research, and the role of carbides and matrix in wear property is still unclear.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of Tempering Temperature on the Microstructure and Wear Properties of Powder Metallurgy High‐Speed Steels

Lyu

Yao

Zhang

et al. 2022

steel research int.

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The influence of tempering temperature on the microstructure of powder metallurgy high-speed steels (PM HSSs) PM20 is investigated by X-ray diffraction, electron backscattering diffraction, and transmission electron microscopy. With the increasing of tempering temperature, the ratio of low angle grain boundaries decreases, while the volume fraction and size of M 6 C and VC carbides increase. The wear resistance of PM20 with different tempering temperatures is studied by reciprocating ball-on-flat methods. The wear properties of PM20 decrease gradually with the increasing of tempering temperature. The variation of wear properties is explained by the characteristic of the martensite matrix, carbides, and the misorientation angle of boundaries. All samples present a complex wear mechanism of abrasive wear and oxidation wear.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of Tempering Temperature on the Microstructure and Wear Properties of Powder Metallurgy High‐Speed Steels

Lyu

Yao

Zhang

et al. 2022

steel research int.

Self Cite

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show abstract

“…PM20 contains a lot of alloying elements, and the content of carbides can reach about 13%. [ 32 ] Figure 6 a presents the EBSD band map of PM20, the red ones are M 6 C while the green ones are VC, which are approximately spherical and evenly distributed in the matrix. It is reported that the second phase in the alloy usually precipitates at the grain boundary, which has a pinning effect on the grain boundary and can prevent the growth of grains.…”

Section: Discussionmentioning

confidence: 99%

Grain Coarsening of a Powder Metallurgical High‐Speed Steel After Sliding Wear

Lyu

Yao

Zhang

et al. 2022

steel research int.

Self Cite

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The microstructure of a powder metallurgical high‐speed steel (PM HSS) after sliding wear is investigated by using electron backscattering diffraction (EBSD) and transmission electron microscope (TEM). Part of martensite blocks become coarsened as the fine blocks can still be seen after sliding wear. The texture, nanolamellar structure, and twin martensite are observed, which suggests that grain rotation and grain boundary migration are driven by plastic deformation and are the main factors for grain growth. However, grain rotation and grain boundary migration are also blocked by carbides and alloy elements segregation, resulting in discontinuous grain growth.

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Effect of Nano‐TiC Ceramic Particles on Microstructures and Properties of High‐Cr Steel under Different Heat‐Treatment Conditions

Chang

Shu

et al. 2023

Adv Eng Mater

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In order to improve the service life of die steels, many methods have been used to improve their properties. However, some properties may be weakened after different heat treatments. In this study, a novel method of nanoparticle treatment was used to improve the service performance of high Cr steel, and the effect of nano‐TiC ceramic particles on its microstructures and properties under different heat treatment conditions was investigated. After forging and isothermal spheroidization, the nano‐TiC ceramic particles treatment high Cr steel has a mixed grain with equiaxed grain and striated grain. Under different heat treatment conditions, the nano‐TiC reinforced high Cr steel has refined martensite laths, carbides, and a higher content of retained austenite. In contrast, the nano‐TiC ceramic particles reinforced high Cr steel have higher strength and strain, the yield strength (σ0.2), tensile strength (σb), fracture strain, product of strength and strain, and impact toughness of HCS‐51 (HCSN‐51), are 1349 MPa (1531 MPa), 1662 MPa (1770 MPa), 9.4% (12.1%), 12405 MPa·% (18766 MPa·%) and 266 J/cm2 (445 J/cm2), which is 13.5%, 6.5%, 28.7%, 51.3% and 67.3% higher, respectively. The primary strengthening mechanisms included fine‐grain strengthening and precipitation strengthening. The main toughness mechanism was fine‐grain and transformation‐induced plasticity.This article is protected by copyright. All rights reserved.

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Effect of heat treatment on microstructure and impact toughness of a Tungsten-Molybdenum powder metallurgical high-speed steel

Cited by 28 publications

References 40 publications

Influence of Tempering Temperature on the Microstructure and Wear Properties of Powder Metallurgy High‐Speed Steels

Influence of Tempering Temperature on the Microstructure and Wear Properties of Powder Metallurgy High‐Speed Steels

Grain Coarsening of a Powder Metallurgical High‐Speed Steel After Sliding Wear

Effect of Nano‐TiC Ceramic Particles on Microstructures and Properties of High‐Cr Steel under Different Heat‐Treatment Conditions

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