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No.1018E 2022Special Edition on Industry Related Technologies 3D Additive Manufacturing for Alloy Tool Steel

Category TECHNICAL REPORT
Author M. TANO
Innovative Processing R&D Dept., Research & Development Division, Dr. Eng.
Y. MISADA
Material R&D Dept., Research & Development Division
T. NAGAHAMA
BR Marketing Dept., Sales & Marketing Division
T. MIZOGUCHI　T. MITSUI
Innovative Processing R&D Dept., Research & Development Division
H. HOSHINO
Materials Innovation Engineering Dept., Production Engineering Division
Abstract Laser beam powder bed fusion (PBF-LB) for alloy tool steel is developed to fabricate casting dies for automobile parts by additive manufacturing. Internal defects such as pores, micro cracks and carbide, which deteriorate mechanical properties, have been improved by the developed process parameters, reduction of crack susceptibility index, and heat treatment. As a result, the workpieces manufactured using PBF-LB achieved a tensile strength and Charpy impact value equivalent to the wrought samples.
Keyword additive manufacturing, laser beam powder bed fusion, alloy tool steel
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