Process Parameters and Microstructure of Laser Forming Repaired Inconel 625 Alloy

被引：0

作者：

Xu Qingdong ^{[1
]}

Wang Shugang ^{[1
]}

Le Guomin ^{[1
]}

Yang Lei ^{[1
]}

Mo Wenlin ^{[1
]}

Jiang Chi ^{[1
]}

Wei Yiyun ^{[1
]}

Zhang Pengcheng ^{[1
]}

机构：

[1] China Acad Engn Phys, Mianyang 621908, Sichuan, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2019年 / 48卷 / 05期

关键词：

laser forming repairing; Inconel; 625; process parameters; microstructure; MECHANICAL-PROPERTIES; DEPOSITION; EVOLUTION; TITANIUM; STRENGTH; BEHAVIOR; JOINT;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The process parameters and microstructure of the laser forming repaired (LFR) samples of Inconel 625 alloy were investigated. The results show that a wide range of process parameters are suitable for the laser forming repairing of Inconel 625 alloy. The laser power mainly affects the width of single track LFR samples. The scanning velocity has significant effect on the size of single track LFR samples. The powder feeding rate has less effect on the size of single track LFR samples. The interface between the substrate and laser repaired zone (LRZ) shows a metallurgical bonding. The phases in the substrate mainly include the gamma(Ni-Cr) matrix, MC (NbC, TiC) carbides with bimodal sizes of about 10 mu m and 0.5 mu m, and Laves phase. In the LRZ, columnar dendrites grow epitaxially from the substrate, approx following the deposition direction. The phases in LRZ mainly consist of gamma matrix, Laves phase and a small amount of MC carbides. Due to the increase of nucleation sites, a large amount of Laves phase are precipitated in the layer interface and track interface.

引用

页码：1598 / 1604

页数：7

共 21 条

[1] Laser aided direct metal deposition of Inconel 625 superalloy: Microstructural evolution and thermal stability [J].

Dinda, G. P. ;

Dasgupta, A. K. ;

Mazumder, J. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 509 (1-2) :98-104

[2]

Guo Jian-ting, 2011, Chinese Journal of Nonferrous Metals, V21, P476

[3]

Guo LL, 2016, RARE METAL MAT ENG, V45, P2219, DOI 10.1016/S1875-5372(17)30006-1

[4] Nickel based superalloy welding practices for industrial gas turbine applications [J].

Henderson, MB ;

Arrell, D ;

Larsson, R ;

Heobel, M ;

Marchant, G .

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2004, 9 (01) :13-21

[5]

Jiang CY, 2003, RARE METAL MAT ENG, V32, P295

[6] Effect of heat treatment and hot isostatic pressing on the microstructure and mechanical properties of Inconel 625 alloy processed by laser powder bed fusion [J].

Kreitcberg, Alena ;

Brailovski, Vladimir ;

Turenne, Sylvain .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 689 :1-10

[7] Microstructure evolution characteristics of Inconel 625 alloy from selective laser melting to heat treatment [J].

Li, C. ;

White, R. ;

Fang, X. Y. ;

Weaver, M. ;

Guo, Y. B. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 705 :20-31

[8] Microstructure and mechanical properties of laser forming repaired 17-4PH stainless steel [J].

Lin, Xin ;

Cao, Yongqing ;

Wu, Xiaoyu ;

Yang, Haiou ;

Chen, Jing ;

Huang, Weidong .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 553 :80-88

[9]

[林鑫 LIN Xin], 2009, [中国表面工程, China Surface Engineering], V22, P19

[10] Microstructure and Mechanical Properties of Laser Forming Repaired 300M Steel [J].

Liu Fenggang ;

Lin Xin ;

Song Kan ;

Song Menghua ;

Han Yifan ;

Huang Weidong .

ACTA METALLURGICA SINICA, 2017, 53 (03) :325-334

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