The Microtexture and Tensile Properties of Continuous-Wave and Quasi-Continuous-Wave Laser Powder-Deposited Inconel 718

Liu, Zhaoyang1,3; Zhu, Qiang2,3; Song, Lijun4

10.1007/978-3-030-05861-6_43

2019

23671696

148th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2019

463-471

San Antonio, TX, United states

GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND

Springer International Publishing

Inconel 718 superalloy has been widely used in the aerospace field. In this study, the effect of linear heat input and laser mode on the microtexture and tensile properties of laser powder-deposited (LPD) Inconel 718 was studied. Continuous-wave (CW) and quasi-continuous-wave (QCW) laser modes were conducted in the experiments. The results showed that under low linear heat input, the microtexture morphologies with CW LPD and QCW LPD were long directional columnar grains and chaotic grains, respectively. The grain size of QCW LPD is finer than that of CW LPD. With the increase of linear heat input, the directivity of microtexture morphology with CW LPD becomes unobvious, while the microtexture morphology of QCW LPD changes little with enlarged grain size. Due to the finer grain size, the tensile strength at 600 ℃ of sample with low linear heat input (60 J/mm) and QCW laser mode is 17.7% higher than that with high linear heat input (120 J/mm) and CW laser mode.
© 2019, The Minerals, Metals & Materials Society.

Microtexture Tensile property Laser additive manufacturing

第一 ; 通讯

英语

EI ; CPCI-S

Shenzhen Science and Technology Innovation Commission[JCYJ20170817111811303]

Materials Science ; Metallurgy & Metallurgical Engineering

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000560397400043

20191806854652

Continuous wave lasers ; Grain size and shape ; Laser modes ; Morphology ; Tensile properties ; Tensile strength

Lasers, General:744.1 ; Materials Science:951

EV Compendex

1.College of Innovation and Entrepreneurship, Southern University of Science and Technology, Shenzhen; 518055, China
2.Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen; 518055, China
3.Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials, Southern University of Science and Technology 518055, Shenzhen, China
4.Hunan Provincial Key Laboratory of Intelligent Laser Manufacturing, Hunan University, Changsha; 410082, China

Liu, Zhaoyang,Zhu, Qiang,Song, Lijun. The Microtexture and Tensile Properties of Continuous-Wave and Quasi-Continuous-Wave Laser Powder-Deposited Inconel 718[C]. GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND:Springer International Publishing,2019:463-471.