The comparative study of W/Cr addition in Fe-base by laser surface alloying on fatigue wear resistance of GCI

被引：18
|
作者：
Chen, Zhi-kai [1 ]
Meng, Chao [2 ,3 ]
Dong, Ji-xing [1 ]
Zhou, Ti [1 ]
Tong, Xin [4 ]
Zhou, Hong [1 ]
机构：
[1] Jilin Univ, Key Lab Automobile Mat, Minist Educ, Changchun 130025, Peoples R China
[2] Liaoning Tech Univ, Dept Mat Sci & Engn, Fuxin 123000, Peoples R China
[3] Taiyuan Univ Technol, Shanxi Key Lab Adv Magnesium Based Mat, Taiyuan 030024, Peoples R China
[4] Guangzhou Res Inst Nonferrous Met, Natl Engn Lab Modern Mat Surface Engn Technol, Guangzhou 510651, Guangdong, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2016年 / 286卷
基金：
中国国家自然科学基金;
关键词：
Laser surface alloying; Fatigue wear resistance; Gray cast iron; Finite element method; ROLLING-CONTACT FATIGUE; RESIDUAL-STRESSES; CARBON STEEL; BEHAVIOR; IRON;
D O I：
10.1016/j.surfcoat.2015.12.009
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Laser surface alloying technology was used to improve the fatigue wear resistance of gray cast iron. Comparative studies among the specimens with Cr or WC addition, with the Cr + WC addition and without addition were experimentally investigated. The strengthening mechanism of unit with Cr or WC addition was revealed by means of EDS. After fatigue wear tests, the improved level of fatigue wear resistance was assessed in light of the average mass loss of each group and the defects on various regions were significantly investigated and compared. A finite element method was carried out under laboratory conditions to illuminate the stress distribution on specimens' surfaces and the magnitude of contact stress along contact line. The results of fatigue wear test and finite element calculation were used to account for the fatigue wear resistance mechanisms. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：25 / 35
页数：11
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