Microstructure, mechanical properties, and wear resistance of VCp-reinforced Fe-matrix composites treated by Q&P process

被引：8
|
作者：
Chen, Ping-hu [1 ,2 ]
Li, Yi-bo [1 ,2 ,3 ]
Li, Rui-qing [2 ,3 ]
Jiang, Ri-peng [3 ]
Zeng, Song-sheng [4 ]
Li, Xiao-qian [1 ,2 ,3 ]
机构：
[1] Cent S Univ, Coll Mech & Elect Engn, Changsha 410083, Hunan, Peoples R China
[2] State Key Lab High Performance Complex Mfg, Changsha 410083, Hunan, Peoples R China
[3] Cent S Univ, Light Alloy Res Inst, Changsha 410083, Hunan, Peoples R China
[4] Valin ArcelorMittal Automot Steel Co Ltd, Loudi 417000, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS | 2018年 / 25卷 / 09期
基金：
中国国家自然科学基金;
关键词：
vanadium carbide; Fe-matrix composites; quenching and partitioning process; transformation-induced plasticity effect; microhardness; impact toughness; wear resistance; HIGH-SPEED STEEL; VANADIUM CARBIDE; TRIP STEELS; 1ST-PRINCIPLES; STABILITY; EVOLUTION; BEHAVIOR; ALLOY;
D O I：
10.1007/s12613-018-1657-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A quenching and partitioning (Q&P) process was applied to vanadium carbide particle (VCp)-reinforced Fe-matrix composites (VC-Fe-MCs) to obtain a multiphase microstructure comprising VC, V8C7, M3C, -Fe, and -Fe. The effects of the austenitizing temperature and the quenching temperature on the microstructure, mechanical properties, and wear resistance of the VC-Fe-MCs were studied. The results show that the size of the carbide became coarse and that the shape of some particles began to transform from diffused graininess into a chrysanthemum-shaped structure with increasing austenitizing temperature. The microhardness decreased with increasing austenitizing temperature but substantially increased after wear testing compared with the microhardness before wear testing; the microhardness values improved by 20.0% +/- 2.5%. Retained austenite enhanced the impact toughness and promoted the transformation-induced plasticity (TRIP) effect to improve wear resistance under certain load conditions.
引用
收藏
页码：1060 / 1069
页数：10
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