摘要
利用光学显微镜(OM)、扫描电镜(SEM)对合金微观组织进行分析,并结合室温力学性能测试研究了热处理温度对TC11锻件微观组织和力学性能的影响。结果表明:升高第一阶段的退火温度,等轴α数量减少,条状α增加,从而大幅度降低合金塑性;第二阶段时效温度的升高使得等轴α相转变为长条状,增加了初生α相颗粒间距,这有利于降低次生α相缺口敏感性,从而提高材料的塑性和韧性。通过合理的双重热处理温度控制,可得到强韧性最佳匹配的合金组态。
Aiming at the problems such as large deformation resistance and difficulty in deforming during hot working of high-temperature a alloy Ti600, all specimens were handled hydrogen treatment respectively by five different hydrogen content （mass fraction） from 0.1% to 0.5%, and dehydrogenated by vacuum annealing. The microstructure evolution and tensile properties of Ti600 alloy at thermal temperatures were studied. The effects of thermo-hydrogenation treatment on the microstrueture, grain size, as well as high temperature mechanical, heat processing plasticity and the variations regularity were investigated. The result shows that the microstructures of Ti600 alloy are refined to some degree. The thermal plasticity of Ti600 alloy is improved obviously with hydrogen increasing from 0.1% to 0.5%.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2010年第B10期118-122,共5页
The Chinese Journal of Nonferrous Metals
基金
国家科技支撑计划资助项目(2007BAE07801)
国家重点基础研究发展计划资助项目(2007CB613807)
关键词
TI600合金
热氢处理
组织细化
力学性能
热工艺塑性
Ti600 alloy
thermo-hydrogenation treatment
microstructure refinement
mechanical property
thermal processing plasticity
