Tensile Properties of Cast Alloy IN625 in Relation to δ Phase Precipitation
来源期刊：Acta Metallurgica Sinica2019年第4期
论文作者：Yi-Qiang Mu Chang-Shuai Wang Wen-Long Zhou Lan-Zhang Zhou
文章页码：535 - 540
摘 要：The relationship between the tensile properties and S(delta) phase precipitation in cast alloy IN625 was investigated in this paper. Although the influences of δ phase on the mechanical properties have been pointed out in our previous work, the relationship is still not directly determined due to the coexistence of γ"(gamma double prime) and δ precipitates. In order to exclude the effect from γ" phase, various fractions of δ precipitates with few γ" precipitates were obtained by a set of experimental alloys aging at 750 ℃, and tensile tests were conducted in parallel. The results showed that both yield strength and ultimate tensile strength increased nearly in linear with increasing δ phase fraction, while the elongation was relatively and limitedly affected by δ precipitation when the area fraction of δ phase was above 10%.
Yi-Qiang Mu1,2，Chang-Shuai Wang1，Wen-Long Zhou2，Lan-Zhang Zhou1
1. Institute of Metal Research,Chinese Academy of Science2. School of Materials Science and Engineering,Dalian University of Technology
摘 要：The relationship between the tensile properties and S(delta) phase precipitation in cast alloy IN625 was investigated in this paper. Although the influences of δ phase on the mechanical properties have been pointed out in our previous work, the relationship is still not directly determined due to the coexistence of γ"(gamma double prime) and δ precipitates. In order to exclude the effect from γ" phase, various fractions of δ precipitates with few γ" precipitates were obtained by a set of experimental alloys aging at 750 ℃, and tensile tests were conducted in parallel. The results showed that both yield strength and ultimate tensile strength increased nearly in linear with increasing δ phase fraction, while the elongation was relatively and limitedly affected by δ precipitation when the area fraction of δ phase was above 10%.
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