TY - GEN
T1 - Reduction of Micro-Crack in Ni-Based Superalloy IN-713LC Produced by Laser Powder Bed Fusion
AU - Raza, M. Mohsin
AU - Wang, Hung Yu
AU - Lo, Yu Lung
AU - Tran, Hong Chuong
N1 - Funding Information:
Acknowledgments The authors gratefully acknowledge the financial support provided to this study by the Ministry of Science and Technology of Taiwan under Grant No. MOST 107-2218-E-006-051. The study was also supported in part by the funding provided to the Intelligent Manufacturing Research Center (iMRC) at National Cheng Kung University (NCKU) by the Ministry of Education, Taiwan, Headquarters of University Advancement. The assistance provided by Prof. Fei-Yi Hung at NCKU in conducting the heat treatment and tensile testing elements of the present study is much appreciated.
Publisher Copyright:
© 2022, The Society for Experimental Mechanics, Inc.
PY - 2022
Y1 - 2022
N2 - 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.
AB - 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.
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U2 - 10.1007/978-3-030-86745-4_10
DO - 10.1007/978-3-030-86745-4_10
M3 - Conference contribution
AN - SCOPUS:85125404312
SN - 9783030867447
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 73
EP - 76
BT - Thermomechanics 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
A2 - Dudycz, Tadeusz
A2 - Osbert-Pociecha, Grażyna
A2 - Brycz, Bogumiła
PB - Springer
T2 - SEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2021
Y2 - 14 June 2021 through 17 June 2021
ER -