Effect of tempering treatment on microstructure and fatigue life of TiC-Cr overlay, produced by plasma transferred arc alloying

被引：4

作者：

Shi, Kaiyuan ^{[1
]}

Hu, Shubing ^{[1
]}

Liang, Lingjiang ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2012年 / 47卷 / 02期

关键词：

X-RAY-DIFFRACTION; LOW-CARBON STEEL; AUSTENITIC STAINLESS-STEEL; ROLLING-CONTACT FATIGUE; INDUCED RESIDUAL-STRESS; WEAR-RESISTANCE; MECHANICAL-PROPERTIES; WEIBULL DISTRIBUTION; COMPOSITE COATINGS; HEAT-TREATMENT;

D O I：

10.1007/s10853-011-5845-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, TiC-Cr overlay formed by plasma transferred arc alloying was subjected to tempering treatment at 473, 673, and 873 K for 2 h, respectively. XRD was employed to investigate phase transformation, determine the austenite proportion and evaluate the crystallite size. Microstructure investigation by SEM and TEM, microhardness and fatigue test were performed on as-deposited condition and after tempering. Evolution of microstructure as well as its relationship with microhardness and fatigue property of coating was described. The results suggest that both microhardness and fatigue strength could be improved by tempering at 473 K; however, further elevation of the temperature directs degradation. Based on the Weibull distribution, tempering treatment increases the slope of fitting line, which suggests that fatigue life becomes more predictable.

引用

页码：720 / 729

页数：10

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