固溶温度对A286合金低温力学性能的影响

doi:10.13251/j.issn.0254-6051.2023.03.016

金属热处理 ›› 2023, Vol. 48 ›› Issue (3): 96-99.DOI: 10.13251/j.issn.0254-6051.2023.03.016

固溶温度对A286合金低温力学性能的影响

代礼斌, 杨章程, 邓雄, 邱仕佳, 郑朝清

重庆市计量质量检测研究院, 重庆 401121

收稿日期:2022-10-07 修回日期:2023-01-10 出版日期:2023-03-25 发布日期:2023-04-25
作者简介:代礼斌(1985—),男,高级工程师,主要研究方向为金属材料的检验与研究,E-mail:421170932@qq.com。
基金资助:
重庆市计量质量检测研究院院立项目[2020(研)-2]

Effect of solution temperature on cryogenic mechanical properties of A286 alloy

Dai Libin, Yang Zhangcheng, Deng Xiong, Qiu Shijia, Zheng Chaoqing

Chongqing Institute of Measurement and Quality Inspection, Chongqing 401121, China

Received:2022-10-07 Revised:2023-01-10 Online:2023-03-25 Published:2023-04-25

摘要/Abstract

摘要： 利用电子万能试验机、金相显微镜、冲击试验机、电子探针研究了A286合金经900、950和1000 ℃固溶1 h,水冷+720 ℃时效16 h空冷后的低温(-50、-196和-269 ℃)力学性能。结果表明,测试温度相同时,随着固溶温度的升高,抗拉强度和屈服强度变化不大,断后伸长率在33%~42%之间,断面收缩率在45%~52%之间;固溶温度相同时,随着测试温度的降低,抗拉强度和屈服强度均增加,冲击吸收能量降低,最低冲击吸收能量为45 J,但仍保持着良好的韧性。

关键词: A286合金, 固溶处理, 时效, 低温力学性能

Abstract: Mechanical properties at low temperatures (-50, -196, -269 ℃) of the A286 alloy after solution treatment at 900, 950 and 1000 ℃ for 1 h, water cooling and aging at 720 ℃ for 16 h, air cooling were studied by means of electronic universal testing machine, metallographic microscope, impact testing machine and electron probe. The results show that at the same test temperature, with the increase of solution treatment temperature, the tensile strength and yield strength change a little, the elongation after fracture is 33%-42%, and the percentage reduction of area is 45%-52%. At the same solution treatment temperature, with the decrease of test temperature, both the tensile strength and the yield strength increase, and the impact absorbed energy decreases, the minimum impact absorbed energy is 45 J, but the good toughness is still maintained.

Key words: A286 alloy, solution treatment, aging, cryogenic mechanical properties

中图分类号:

代礼斌, 杨章程, 邓雄, 邱仕佳, 郑朝清. 固溶温度对A286合金低温力学性能的影响[J]. 金属热处理, 2023, 48(3): 96-99.

Dai Libin, Yang Zhangcheng, Deng Xiong, Qiu Shijia, Zheng Chaoqing. Effect of solution temperature on cryogenic mechanical properties of A286 alloy[J]. Heat Treatment of Metals, 2023, 48(3): 96-99.

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固溶温度对A286合金低温力学性能的影响

Effect of solution temperature on cryogenic mechanical properties of A286 alloy

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