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Fabrication of 17‐4PH Stainless Steel Foam by a Pressureless Powder Space Holder Technique
Author(s) -
Hsu Chia-Ming,
Tzeng Yu-Chih,
Chen Shun-Fa,
Chen Yu-Liang,
Lee Huei-Long
Publication year - 2021
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.202001202
Subject(s) - materials science , porosity , compressive strength , composite material , fabrication , precipitation hardening , precipitation , syntactic foam , hardening (computing) , metallurgy , microstructure , layer (electronics) , medicine , alternative medicine , physics , pathology , meteorology
High compressive strength closed‐cell porous 17‐4PH precipitation hardening stainless steel with three different porosities (30%, 40%, and 50%, volume percent) was manufactured using a novel pressureless powder space holder method. The compressive strengths of the as‐sintered 17‐4PH stainless steel foam with porosities of 30%, 40%, and 50% are 420, 275, and 187 MPa, respectively. The application of an H900 heat treatment to the as‐sintered porous 17‐4PH stainless steel can effectively improve the compressive strength due to the precipitation of ϵ‐Cu phases. It is shown that with this pressureless powder space holder method, it can efficiently produce closed‐cell porous 17‐4PH stainless steel and control its porosity.