TC21合金在不同温度下进行连续多步置氢处理时的显微组织及室温力学性能

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中文摘要：利用OM、XRD、TEM以及压缩试验等方法研究TC21钛合金经不同温度连续多步置氢处理后的显微组织及室温力学性能.结果表明:当氢处理温度超过1073 K时,α相的尺寸明显降低,β相成为主要相.随着氢处理温度的升高,δ氢化物的含量呈先增加后逐渐降低的趋势.当氢处理温度超过1073 K时,TC21钛合金在室温压缩变形过程中出现应变软化现象,且该现象随氢处理温度的升高而越来越显著.随着氢处理温度的升高,TC21钛合金的极限变形率呈先降低后增加的趋势.当氢处理温度为1123 K时,TC21钛合金的极限变形率比原始合金增加 67.51％.

外文标题：Micro structure and room-temperature mechanical property of TC21 alloy treated by continuous multistep hydrogenation at different temperatures

外文摘要：Microstructure and room-temperature mechanical property of TC21 titanium alloy treated by continuous multistep hydrogenation at different temperatures were studied by OM,XRD,TEM and compressive test.Results showed that the size of α phase decreased obviously and β phase became the main phase when the hydrogenation temperature exceeded 1073 K.The content of δ hydride increased first and then decreased gradually with the increase of hydrogenation temperature.The strain softening phenomenon appeared during the compression process of TC21 titanium alloy when the hydrogenation temperature exceeded 1073 K and became obvious with the increase of hydrogenation temperature.The ultimate compression of TC21 titanium alloy decreased first and then increased with the increase of hydrogenation temperature,and increased by 67.51％compared with that of the as-received TC21 titanium alloy when the hydrogenation temperature was 1123 K.

外文关键词：

TC21 alloycontinuous multistep hydrogenation treatmentroom-temperature mechanical propertypressure-composition isotherm

作者：

袁宝国、钱德国、张小雪、陈强、汤爱闯

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作者单位：

合肥工业大学材料科学与工程学院,合肥 230009

安徽三联学院机械工程学院,合肥 230601

西南技术工程研究所,重庆 400039

关键词：

TC21合金连续多步置氢处理室温力学性能压力-组成等温线

基金：

国家自然科学基金国家自然科学基金Cultivating Program for Excellent Talent in University,China

项目编号：

5227532851875157GXYQ2021238

出版年：

2024

DOI：

10.1016/S1003-6326(24)66488-5

中国有色金属学报(英文版)

中国有色金属学会

中国有色金属学报(英文版)

CSTPCD

影响因子：1.183

ISSN：1003-6326

年,卷(期)：2024.34(5)