赵美,陶国文,陈文慧

• 1:营口理工学院材料科学与工程学院

摘要(Abstract)：

通过扫描电镜(SEM)、X射线衍射(XRD)和电子万能实验机等研究了不同温度热处理(350～900℃)对TA2/316L爆炸焊接接头显微组织和力学性能的影响。结果表明：随热处理温度的升高，TA2/316L爆炸焊接接头界面缺陷如层状偏析、微孔洞及短裂纹得到修复，微观组织逐渐均匀化，晶粒较为细小，但当热处理温度超过550℃时，TA2侧的组织逐渐粗化，当热处理温度为900℃时，TA2侧和316L侧的组织均显著粗化，接头界面生成大量Fe_2Ti、NiTi、FeTiO_3及Fe_(2.75)Ti_(0.25)O_4等脆性相，导致接头的剪切强度显著降低；当热处理温度为550℃时，TA2/316L爆炸焊接接头的剪切强度达到最大值，为335 MPa,比原始接头试样提升了55.8%,这是由于此时接头界面的微孔洞、裂纹等缺陷得到修复，TA2侧的晶粒细小均匀，接头界面没有Fe_2Ti、FeTiO_3及Fe_(2.75)Ti_(0.25)O_4等脆性相的形成及聚集。

关键词(KeyWords)： TA2/316L;热处理温度;显微组织;性能

Abstract:

Keywords:

基金项目(Foundation): 辽宁省菱镁矿高值利用工程研究中心项目(LMNY2025020222);; 营口市新质生产力技术支撑与验证中心项目(JSZCZX0410)

作者(Author): 赵美,陶国文,陈文慧

DOI: 10.13289/j.issn.1009-6264.2025-0227

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