粗晶TM52钢结硬质合金的冲击磨料磨损性能研究<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.012.009

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Abstract The impact abrasive wear resistance of coarse grained TM52 steel bonded carbide was systematically evaluated. And it was compared with the normal fine grained TM52 which were sintered in vacuum and at low pressure (about 5 MPa) under diffe-rent impact energy working condition. Then the wear mechanism of coarse grain TM52 was investigated based on the electron microscopy inspection analysis of its wear surface. The results revealed that the impact abrasive wear resistance of the coarse grained TM52 steel bonded carbide decreased first and increased later with the gradual improvement of the impact load, which was closely related to the high hardening rate and hardening effect of high manganese steel matrix under high impact energy conditions. The impact abrasive wear resistance of coarse grained TM52 steel bonded carbide had obvious advantages compared with fine grained TM52, especially under the high impact energy (3-4 J/cm²), the wear-resisting performance increased by 40%-80%. Its wear mechanism mainly includes grinding abrasion, scratch abrasion and fatigue abrasion, while chisel cutting abrasion was not obvious.

Key words： coarse grain steel bonded carbide impact abrasive wear impact energy

Published: 25 June 2017 Online: 2018-05-08

CLC number:

TF125

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	Articles by authors
	LI Zhihua
	XIAO Ping’an
	LI Chenkun
	LIU Yang
	SONG Jianyong
	CHEN Chao

Cite this article:

LI Zhihua,XIAO Ping’an,LI Chenkun, et al. Study on Impact Abrasive Wear of Coarse Grained TM52 High Manganese Steel Bonded Carbides[J]. Materials Reports, 2017, 31(12): 39-44.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.012.009 OR https://www.mater-rep.com/EN/Y2017/V31/I12/39

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