Influence of Heterogeneous Microstructure on Strength of Aluminum Bronze Fabricated by Laser Powder Bed Fusion

• DOI: 10.2497/jjspm.16b-t6-36
• Publication Date: 2025-03-14T22:17:54Z
• Authors: Ken Imai; Yuji Sugitani; Seiichi Matsumoto; Yoichiro Shimpo; Hideki Kyogoku
• Keywords: Bronze

In this research, the microstructure and tensile properties of Cu–2–7 mass% Al alloys in α single-phase region on phase diagram fabricated by laser powder bed fusion (PBF-LB) process casting were systematically examined, their formation mechanism strengthening investigated. As a result, micro-fine cellular structures formed segregation due to constitutional supercooling rapid solidification phenomenon PBF-LB leaded high strength 0.2% proof stress, which much higher than those castings. It was revealed that performance Cu–Al is attributed heterogeneous process.