半固态加工Ti?Cu合金的显微组织和力学行为

半固态加工Ti?Cu合金的显微组织和力学行为

研究触变成形Ti?Cu合金的力学性能.Ti?Cu(25％,27％,29％Cu,质量分数)锭的制备流程为:先进行电弧熔炼,再在950℃均匀化处理24 h,然后在900℃热锻,最后在1035℃热处理300 s后以8 mm/s的速度触变成形.结果显示,触变成形合金表现出良好的力学强度,但其在拉伸载荷下的塑性一般,在压缩载荷下的塑性尚可.随着Cu含量的增加,包晶Ti2Cu相(转变液相区)的体积分数增加,与α+Ti2Cu相区(转变固相区)相比,其力学强度和塑性更低,导致合金的力学强度和塑性降低.这些结果表明,Ti?Cu合金的力学性能和半固态加工性之间的平衡主要取决于Cu含量....

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Veröffentlicht in:中国有色金属学报（英文版） 2022, Vol.32 (11), p.3578-3586
Hauptverfasser: Kaio NIITSU CAMPO, Caio Chaussê de FREITAS, éder Sócrates Najar LOPES, Suk-Chun MOON, Rian DIPPENAAR, Rubens CARAM
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container_end_page 3586
container_issue 11
container_start_page 3578
container_title 中国有色金属学报（英文版）
container_volume 32
creator Kaio NIITSU CAMPO
Caio Chaussê de FREITAS
éder Sócrates Najar LOPES
Suk-Chun MOON
Rian DIPPENAAR
Rubens CARAM
description 研究触变成形Ti?Cu合金的力学性能.Ti?Cu(25％,27％,29％Cu,质量分数)锭的制备流程为:先进行电弧熔炼,再在950℃均匀化处理24 h,然后在900℃热锻,最后在1035℃热处理300 s后以8 mm/s的速度触变成形.结果显示,触变成形合金表现出良好的力学强度,但其在拉伸载荷下的塑性一般,在压缩载荷下的塑性尚可.随着Cu含量的增加,包晶Ti2Cu相(转变液相区)的体积分数增加,与α+Ti2Cu相区(转变固相区)相比,其力学强度和塑性更低,导致合金的力学强度和塑性降低.这些结果表明,Ti?Cu合金的力学性能和半固态加工性之间的平衡主要取决于Cu含量.
doi_str_mv 10.1016/S1003-6326(22)66040-0
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title 半固态加工Ti?Cu合金的显微组织和力学行为
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