Study on microstructure and mechanical properties of laser repaired 1Cr12Ni3MoVN alloy

被引：3

作者：

Xue L. ^{[1
]}

Lu P. ^{[1
]}

Chen J. ^{[1
]}

Lin X. ^{[1
]}

Huang W. ^{[1
]}

机构：

[1] State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2010年 / 37卷 / 03期

关键词：

1Cr11Ni2W2MoV alloy; 1Cr12Ni3MoVN alloy; Laser repair; Laser technique; Martensite; Microstructure; Tensile properties;

D O I：

10.3788/CJL20103703.0887

中图分类号：

学科分类号：

摘要：

In the present paper, 1Cr12Ni3MoVN alloy was repaired by laser repair (LR) with 1Cr11Ni2W2MoV. A very good metallurgical bond between the repaired zone and the substrate was achieved. The microstructure of the laser repaired zone (LRZ) is composed by martensite and tempered martensite, and a quenching phenomenon was observed in heat affected zone (HAZ). Micro-hardness values decreased from LRZ to substrate zone (SZ), the maximum value happened in the HAZ close to the melting line. The results of room temperature tensile tests show that the strength of LRZ is 1280~1380 MPa, while the strength of laser repaired sample is 965~980 MPa. Fractures were observed on casting substrate during tensile test.

引用

页码：887 / 890

页数：3

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