Microstructure and mechanical property analysis of ZL114A aluminum alloy repaired by laser deposition

被引：0

作者：

Qin L. ^{[1
]}

Pang S. ^{[1
]}

Yang G. ^{[1
]}

Wang C. ^{[1
]}

Wang W. ^{[1
]}

机构：

[1] Key Laboratory of Fundamental Science for National Defence of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang, 110136, Liaoning

来源：

Zhongguo Jiguang/Chinese Journal of Lasers | 2016年 / 43卷 / 12期

关键词：

Fracture mechanism; Laser deposition repair; Laser technique; Microstructure; Tensile property; ZL114A aluminum alloy;

D O I：

10.3788/CJL201643.1202009

中图分类号：

学科分类号：

摘要：

The laser deposition repair technology is used to repair the tensile specimen with pre-damage and the microstructure, tensile fracture and its neighboring deformation structure are examined and analyzed by the optical microscope and scanning electric microscope. The results show that the microstructure at repaired zone is composed of Al dendrites and Al-Si eutectic whose Si-phase presents Coral-like morphology. The tensile strengths at room temperature of specimens with repair-ratios of 10% and 20% can reach up to 90% and 88% of the casting standard and their elongation rates are both superior to the casting standard; the fracture mechanism at substrate zone is brittle-fracture type, while that at repair zone is ductile-fracture type; the fracture mode for micro-fractures at substrate zone is transgranular, while that at repair zone is granular. © 2016, Chinese Lasers Press. All right reserved.

引用

页数：7

共 17 条

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