Reduction of Micro-Crack in Ni-Based Superalloy IN-713LC Produced by Laser Powder Bed Fusion

M. Mohsin Raza, Hung Yu Wang, Yu Lung Lo, Hong Chuong Tran

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Inconel 713LC is a Ni-based superalloy, which is known as a non-weldable alloy, subjected to severe solidification cracking during the LPBF process. In this study, a systematic optimization method was constructed to find the optimal parameter region of IN713LC in LPBF additive manufacturing. The optimization method combines the perspectives of reducing the micro-cracks and the pores in melt-pool; therefore, the optimal region of the processing map can provide workpieces with less crack and high density. The specimens were fabricated with various fabrication parameters, leading to different melt-pool sizes, shapes, and different crack density. The corresponding results shows a trend that larger the mushy zone would result in the higher susceptibility of micro-cracking. As a result, the crack density of the specimens in the optimal parameter region has the lowest crack and the high relative densiy. It is found that in the result of the tensile test, LPBF processed IN713LC specimen shows excellent mechanical properties than that in casting.

Original languageEnglish
Title of host publicationThermomechanics and Infrared Imaging, Inverse Problem Methodologies, Mechanics of Additive and Advanced Manufactured Materials, and Advancements in Optical Methods and Digital Image Correlation, Proceedings of the 2021 Annual Conference on Experimental and Applied Mechanics
EditorsTadeusz Dudycz, Grażyna Osbert-Pociecha, Bogumiła Brycz
PublisherSpringer
Pages73-76
Number of pages4
ISBN (Print)9783030867447
DOIs
Publication statusPublished - 2022
EventSEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2021 - Virtual, Online
Duration: 2021 Jun 142021 Jun 17

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

ConferenceSEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2021
CityVirtual, Online
Period21-06-1421-06-17

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Computational Mechanics
  • Mechanical Engineering

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