The Process Parameters Extended Criterion for Laser Engineered Net Shaping of Inconel 738

Zhou, Yang1,2; Liu, Zhaoyang2,3; Guo, Chuan2,3; Ye, Guowei2; Li, Xin2; Zhu, Qiang2,3

10.1007/978-3-030-36296-6_46

2020

Nanoscience and Nanotechnology in Advanced Composites Symposium held at TMS 149th Annual Meeting and Exhibition

23671696

2367-1696

149th Annual Meeting and Exhibition of the Minerals, Metals and Materials Society, TMS 2020

491-502

FEB 23-27, 2020

San Diego, CA, United states

GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND

Springer

Laser engineered net shaping processing has been an efficient technique for the rapidly manufacturing high-temperature superalloy parts in recent years. While, for the high crack susceptibility superalloy such as Inconel 738 alloy, the current flawless processing window is very narrow and resultantly limits the application of laser engineered net shaping processing in the area of turbine engines due to discreteness and complexed mutual correlation of the process parameters. In this work, experiments were conducted to study the effect of processing parameters such as laser power and scanning speed on the formability, especially the crack formation and distribution, of laser manufactured Inconel 738 alloy. The results indicate that the element Ti segregation and low-meting point$$ \upgamma/\upgamma^{{\prime }} $$ eutectic generation at the high-angle grain boundary lead to continuous liquid film form during the heating process and then generates cracks under the induction of inclusions such as carbides during the cooling of periodic depositing process. Reducing the element, Ti segregation by optimizing processing parameters and suppression of the remolten of$$ \upgamma/\upgamma^{{\prime }} $$ eutectic during the periodic depositing process can efficiently expand the flawless window for the directly manufacturing Inconel 738 alloy by laser engineered net shaping process.
© 2020, The Minerals, Metals & Materials Society.

Laser engineered net shaping Inconel 738 superalloy Process parameter

通讯

英语

EI ; CPCI-S

[KQTD20170328154443162] ; National Natural Science Foundation of China[51905253]

Materials Science ; Mining & Mineral Processing

Materials Science, Multidisciplinary ; Mining & Mineral Processing

WOS:000674707900046

20201108297540

Carbides ; Eutectics ; Grain boundaries ; Liquid films ; Manufacture ; Superalloys

Metallurgy and Metallography:531 ; Metallography:531.2 ; Heat Treatment Processes:537.1 ; Inorganic Compounds:804.2

EV Compendex

1.Harbin Institute of Technology, Harbin, 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, Shenzhen; 518055, China

Zhou, Yang,Liu, Zhaoyang,Guo, Chuan,et al. The Process Parameters Extended Criterion for Laser Engineered Net Shaping of Inconel 738[C]. GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND:Springer,2020:491-502.