Effect of laser welding on the microstructure and properties in weld zone of Fe-Mn-Si based shape memory alloys

被引：0

作者：

Yang, Jun ^{[1
]}

Chen, Peng ^{[1
]}

Guo, Zhibin ^{[1
]}

Wang, Yao ^{[1
]}

Huang, Bensheng ^{[1
]}

Zhu, Yike ^{[2
]}

Li, Ning ^{[3
]}

机构：

[1] School of Materials Science and Engineering, Southwest Petroleum University, Chengdu, China

[2] Sichuan Huagong Petroleum Steel Pipe Co., Ltd., Chengdu, China

[3] School of Manufacturing Science and Engineering, Sichuan University, Chengdu, China

来源：

Gongneng Cailiao/Journal of Functional Materials | 2015年 / 46卷 / 14期

关键词：

Microstructure - Oil fields - Welds - Corrosion rate - Silicon alloys - Shape memory effect - Corrosion resistant alloys - Laser beam welding - Manganese alloys - Stacking faults - Iron alloys;

D O I：

10.3969/j.issn.1001-9731.2015.14.026

中图分类号：

学科分类号：

摘要：

This paper studied the effect of laser welding on the microstructure and properties in weld zone of Fe-Mn-Si based shape memory alloys. The result showed that weld microstructure could be remarkably refined and the matrix strength improved greatly. In the meanwhile, larger degree of supercooling caused more stacking faults which were conducive to nucleation of Ε martensite, a significant improvement of shape memory effect was obtained accordingly, and compared to matrix, it was increased by 40%-178%. In simulated oilfield medium, due to the passivate phenomenon in the weld with fine and uniform microstructure during corrosion process, at the same time also reduces the corrosion potential of the battery, the corrosion rate was decreased so that the corrosion resistance of the weld was better than the matrix. ©, 2015, Journal of Functional Materials. All right reserved.

引用

页码：14130 / 14133

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