Effect of Mo Content on Microstructure and Properties of TiC-High Mn Steel Bonded Carbide Prepared with Pre-alloyed Powders

LI Guoping; CHEN Wen; LUO Fenghua; DU Yong; LIU Zenglin; YUAN Yong

doi:10.11973/jxgccl201808008

Materials and Mechanical Engineering > 2018 > 42(8): 37-41,47. > DOI: 10.11973/jxgccl201808008

LI Guoping, CHEN Wen, LUO Fenghua, DU Yong, LIU Zenglin, YUAN Yong. Effect of Mo Content on Microstructure and Properties of TiC-High Mn Steel Bonded Carbide Prepared with Pre-alloyed Powders[J]. Materials and Mechanical Engineering, 2018, 42(8): 37-41,47. DOI: 10.11973/jxgccl201808008

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Effect of Mo Content on Microstructure and Properties of TiC-High Mn Steel Bonded Carbide Prepared with Pre-alloyed Powders

1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
2. Laiwu Vocational and Technical College, Laiwu 271100, China;
3. Laiwu Iron and Steel Group Powder Metallurgy Co., Ltd., Laiwu 271104, China

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Received Date: June 12, 2017
Revised Date: June 28, 2018

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Abstract

Abstract

With Fe-Mo-C pre-alloyed powder, FeMn84C0.4 alloy powder, Ni powder, graphite powder and TiC powder as raw materials, TiC-high Mn steel bonded carbide containing different Mo content, with high Mn steel as adhesive phase and TiC as hard phase, was prepared by sintering. Effects of Mo content on the microstructure and properties of the steel-bonded carbide were studied. The results show that with increasing Mo content, the size of TiC particles in microstructure of the steel-bonded carbide decreased first and then increased, and on surfaces formed (Ti,Mo)C solid solution phase. When being compared with those by adding pure Mo powder, TiC particles in the steel-bonded carbide obtained by adding Mo-containing pre-alloyed powder were relatively fine and relatively round and regular, and (Ti,Mo)C solid solution phase formed relatively easily. With the increase of Mo content, the relative density, hardness, rupture strength and impact toughness of the steel-bonded carbide increased first and then decreased, and reached largest values with Mo content of 1.15wt%; the microstructure and comprehensive properties were relatively good.
- TiC,
- steel-bonded carbide,
- pre-alloyed powder,
- microstructure,
- property

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References (20)

References

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Effect of Mo Content on Microstructure and Properties of TiC-High Mn Steel Bonded Carbide Prepared with Pre-alloyed Powders

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