Experimental study on laser deposition repair GH4169 alloy component

Bian Hongyou; Zhao Xiangpeng; Li Ying; Yang Guang; Qin Lanyun; Wang Wei; Ren Yuhang

doi:10.3788/IRLA201645.0206006

Researches on the laser deposition repair of GH4169 nickel-based superalloy with defects of through-groove damage were conducted. The reasons of occurring defects such as gas porosities and ill bonding in the repaired zone were analyzed. And flawless samples were obtained through optimizing laser process parameters. The microstructure characteristic and mechanical properties of laser deposition repair component were investigated, and the local heat treatment of the laser deposition repair component was done. The results indicate that there is a dense metallurgical bond between the repaired zone and the substrate with the optimized process parameters. The tensile strength of laser deposition repair component can be significantly improved with the local heat treatment.

Experimental study on laser deposition repair GH4169 alloy component

1. Key Laboratory of Fundamental Science for National Defence of Aeronautical Digital Manufacturing Process,Shenyang Aerospace University,Shenyang 110136,China;

2. Welding Research Institute,Shenyang Liming Aviation Engine(Group)Co.,Ltd,Aviation Industry Corporation of China,Shenyang 110043,China

Received Date: 2015-06-11

Rev Recd Date: 2015-07-13

Publish Date: 2016-02-25

Key words:

Abstract: Researches on the laser deposition repair of GH4169 nickel-based superalloy with defects of through-groove damage were conducted. The reasons of occurring defects such as gas porosities and ill bonding in the repaired zone were analyzed. And flawless samples were obtained through optimizing laser process parameters. The microstructure characteristic and mechanical properties of laser deposition repair component were investigated, and the local heat treatment of the laser deposition repair component was done. The results indicate that there is a dense metallurgical bond between the repaired zone and the substrate with the optimized process parameters. The tensile strength of laser deposition repair component can be significantly improved with the local heat treatment.

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Reference (25)

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Experimental study on laser deposition repair GH4169 alloy component

doi: 10.3788/IRLA201645.0206006

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