重型机械Issue(3)：79-83,5.
激光金属沉积制备TiC/316L复合材料的室温压缩变形加工硬化行为研究
Investigation of work hardening behavior in TiC/316L composites fabricated by laser metal deposition during room-temperature compressive deformation
摘要
Abstract
Through designing room-temperature compression experiments with 50%deformation,this study investigated the microstructural evolution and work hardening behavior of TiC/316L stainless steel matrix composites fabricated by laser metal deposition during plastic deformation,revealing the influence of TiC content on material work hardening characteristics.The results demonstrate that the modified Ludwik model can fit the true stress-true strain data of TiC/316L composites nonlinearly,accurately establishing both the true stress-strain model and work hardening model with a correlation coefficient of 0.98.The work hardening behavior of TiC/316L composites occurs in the compression process,and the work hardening curves of all parameters conform to the rheological stress variation law.The increase of TiC content increases the work hardening rate,but decreases when it is increased to 2%,which may be related to the agglomeration of TiC particles.After cold deformation,the microstructure of TiC/316L composites displayed characteristics including grains elongated along the compression direction,interrupted epitaxial growth trend,and cellular substructure refinement.关键词
TiC/316L复合材料/室温压缩变形/加工硬化/微观组织Key words
TiC/316L composites/room-temperature compressive deformation/work hardening/microstructure分类
金属材料引用本文复制引用
李亚杰,张爽..激光金属沉积制备TiC/316L复合材料的室温压缩变形加工硬化行为研究[J].重型机械,2025,(3):79-83,5.基金项目
中央财政引导地方科技发展专项资金(YDZJSX20231A045、YDZJSX2024D053) （YDZJSX20231A045、YDZJSX2024D053）
太原科技大学科研启动基金(20232074、20212011、20222063) （20232074、20212011、20222063）
山西省自然科学基金资助课题(202303021212216) （202303021212216）
