HEAT-AFFECTED ZONE MICROSTRUCTURE AND MECHANICAL PROPERTIES EVOLUTION FOR LASER REMANUFACTURING 35CrMoA AXLE STEEL

被引：1

作者：

Feng Xiangyi ^{[1
,2
]}

Dong Shiyun ^{[2
]}

Yan Shixing ^{[2
]}

Liu Xiaoting ^{[2
]}

Xu Binshi ^{[2
]}

Pan Fusheng ^{[1
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China

[2] Natl Key Lab Remfg Acad Armored Forces Engn, Beijing 100072, Peoples R China

来源：

YOUNG SCIENTISTS FORUM 2017 | 2018年 / 10710卷

基金：

中国国家自然科学基金;

关键词：

aser remanufacturing; Heat-affected zone; microstructure and mechanical evolution; precipitated phase; THERMAL-DAMAGE; MORPHOLOGY; BEHAVIOR;

D O I：

10.1117/12.2317524

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this article, by using orthogonal test the technological test was conducted and the optimum processing of the remanufacturing35CrMoA axle were obtained. The evolution of microstructure and mechanical property of HAZ were investigated. The microstructure of HAZ was characterized by means of OM and SEM. Meanwhile hardness distribution in HAZ and tensile property of cladding-HAZ-substrate samples were measured. The microstructure of cladding and HAZ were observed. The microsturcture evoltion and the mechanism of harden in the HAZ was discussed and revealed. The results indicated that the remanufacturing part has excellent strength due to grain refining and dispersive distribution of nanoscale cementite. The remanufacturing part will have uniform microstructure and hardness matching with that of 35CrMoA axle by using stress-relieving annealing at 580 degrees C.

引用

页数：6

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