摘要
针对以纯钛板和工业纯铝为原料铸造复合得到的Ti/Al复合板,采用不同保温时间的退火工艺制度研究了退火时间对Ti/Al复合板的组织和性能的影响。结果表明:随着退火时间延长,在复合界面处的扩散层宽度增大。在退火过程中,Ti-Al系金属间化合物的形成和生长是导致Ti/Al复合界面显微硬度增加、结合强度下降的主要原因。在浇铸温度为700℃、退火温度为550℃、保温2 h退火后,Ti/Al复合板结合强度有较大提升,为最佳退火工艺。
The effects of annealing time on the microstructure and properties of Ti/Al composite plate with pure titanium plate and industrial aluminum as raw materials was studied by using annealing process with different holding time. The results show that, the width of diffusion layer at the composite interface increases with the increase of annealing time. During annealing, the formation and growth of Ti-Al intermetallic compounds are the main reasons for the increase of microhardness and decrease of bonding strength of Ti/Al composite interface. When the casting temperature is 700 ℃, the annealing temperature is 550 ℃ and the annealing temperature is 2 h, the bonding strength of Ti/Al composite plate increases greatly,which is the best annealing process.
作者
闫玮
周嘉昶
汤宏群
覃晓雯
谢君豪
YAN Wei;ZHOU Jiachang;TANG Hongqun;QIN Xiaowen;XIE Junhao(School of Resources,Environment and Materials,Guangxi University,Nanning 530004,China;Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials,Guangxi University,Nanning 530004,China)
出处
《热加工工艺》
北大核心
2020年第18期65-68,共4页
Hot Working Technology
基金
国家自然基金项目(51565005)
广西科技重大专项项目(桂科AA17204036)
广西自然科学基金项目(2018GXNSFAA281258)
广西大学博士启动基金项目(XBZ150136)。
关键词
Ti/Al复合板
退火工艺
组织和性能
金属间化合物
Ti/Al composite plate
annealing process
microstructure and properties
intermetallic compound
