摘要
选取TA10钛合金棒材,将其加热到两相区温度820℃并保温2小时,随后采用水冷、空冷以及炉冷三种方式进行冷却处理,再使用光学显微镜、维氏硬度、拉伸性能测试研究其组织与力学性能的关系,结果表明:经水冷处理后,组织中初生α相减少,析出大量六方马氏体α'相,组织由等轴组织转变为双态组织,进行空冷处理后,组织中除有初生α相外,还形成了次生α相,进行炉冷处理后,组织中初生α相体积明显增大增粗,并且形成细小棒材的次生α相;合金经不同冷却方式处理后的硬度由大到小依次为水冷、空冷、炉冷,其中水冷硬度最大,而空冷和炉冷差距较小;合金经不同冷却方式处理后,合金的抗拉强度与屈服强度均是经水冷处理后最大,经炉冷处理后最小,在塑性方面,合金的断后伸长率趋势与强度相反。
TA10 titanium alloy bar was selected and heated to the temperature of 820℃in the two-phase region and kept for 2h.Subsequently,water cooling,air cooling and furnace cooling were used for cooling treatment.Then,the relationship between microstructure and mechanical properties was studied by optical microscope,Vickers hardness and tensile property test.The results show that after water cooling treatment,the primaryαphase in the microstructure decreases,and a large number of hexagonal martensiteα'phase precipitates,and the microstructure changes from equiaxed microstructure to bimodal microstructure.After air cooling treatment,in addition to the primaryαphase in the microstructure,secondaryαphase is formed.After furnace cooling treatment,the volume of primaryαphase in the microstructure increases significantly.and form secondaryαphase of fine bar;the hardness of different cooling methods is water cooling,air cooling and furnace cooling.The hardness of water cooling is the largest,and the difference between air cooling and furnace cooling is small.The tensile strength and yield strength of the alloy treated by different cooling methods are the largest after water cooling treatment,and the smallest after furnace cooling treatment.In terms of plasticity,the elongation trend of the alloy is opposite to the strength trend.
作者
杨嘉珞
张明玉
岳旭
同晓乐
王玉佳
杨斌
Yang Jialuo;Zhang Mingyu;Yue Xu;Tong Xiaole;Wang Yujia;Yang Bin(Xinjiang Xiangrun New Materials Technology Co.,Ltd.,Hami 839000,China;Engineering Research Center of Continuous Extrusion,Dalian Jiaotong University,Dalian 116028,China;Xinjiang Key Laboratory of Titanium-based New Materials,Hami 839000,China)
出处
《科学技术创新》
2022年第24期169-172,共4页
Scientific and Technological Innovation
基金
新疆钛基新材料重点实验室,2021年度自治区创新环境(人才、基地)建设专项(XJQY2009)。
关键词
TA10钛合金
微观组织
维氏硬度
拉伸性能
TA10 titanium alloy
Microstructure
Vickers hardness
Tensile properties
