摘要
研究不同锻造工艺(三火次镦拔、五火次镦拔、五火次镦拔+中间β均匀化处理)对TC4-DT钛合金显微组织和力学性能的影响,对比分析了不同锻造工艺的微观组织和力学性能的关系。结果表明,与常规锻造和常规均匀锻造相比,采用常规均匀锻造+β均匀化处理(C工艺)的组织在普通退火后具有与力学性能的最佳匹配,并且在后续的变形过程中,随着变形量增大,C工艺由于畸变能以及再结晶的作用产生了许多细小的等轴组织,因此采用C工艺具有细化晶粒的作用,对提高合金的整体性能有益。
Influence of forging process on microstructure and mechanical properties of TC4-DT alloy was studied. The results show that comparing with conventional-forging and conventional uniform-forging, a better combination of strength and plasticity can be obtained for the alloy by uniform forging plus high temperature β heat treatment followed by water quenching after annealing （process C ）. The microstructure of fine equiaxed grains of the alloy is obtained by process C with the deformation degree increasing, and thus the mechanical properties are improved.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2013年第1期49-52,共4页
Transactions of Materials and Heat Treatment
基金
国家"973"计划项目(2007CB613807)
关键词
钛合金
锻造工艺
显微组织
力学性能
titanium alloy
forging process
microstructure
mechanical property
