文档介绍：第 20 卷专辑 1 中国有色金属学报 2010 年 10 月
Special 1 The Chinese Journal of Nonferrous Metals Oct. 2010
文章编号:1004-0609(2010)S1-s0224-05
热轧钛基复合材料的微观组织和力学性能
郭相龙,李九霄,王立强,覃继宁,吕维洁,张荻
(上海交通大学金属基复合材料国家重点实验室,上海 200240)
摘要:利用 Ti 和 LaB6 之间的化学反应,采用真空自耗电弧炉 3 次重熔制得 TiB 和 La2O3 增强的钛基复合材料,
测得其相变点为 1 045 ℃,然后经高温(1 100~1 050 ℃)锻造成板坯。在 1 010 ℃对材料进行热轧,然后空冷,利
用光学显微镜和扫描电镜研究变形量分别为 40%、60%、80%、90%和 95%时复合材料的显微组织和拉伸试样断
口形貌。结果表明:当变形量到达到 80%时,材料的强度一直上升,伸长率下降;变形量继续增大后,强度有所
下降,伸长率提高。
关键词:钛基复合材料;热轧;变形量;显微组织;室温力学性能
中图分类号:TG339 文献标志码:A
Microstructure and mechanical properties of hot-rolled titanium
posite
GUO Xiang-long, LI Jiu-xiao, WANG Li-qiang, QIN Ji-ning, LÜ Wei-jie, ZHANG Di
(State Key Laboratory of Metal posites, Shanghai Jiao Tong University, Shanghai 200240, China)
Abstract: Utilizing the reaction between Ti and LaB6, titanium posite (TMC) plate reinforced with TiB and
La2O3 was prepared by casting trice and hot-forging, its transformation temperature measured was 1 045 ℃. The TMC
was rolled at 1 010 ℃, then air-cooled. The microstructure and fracture surfaces were studied by OM and SEM at
deformation amount of 40%, 60%, 80%, 90% and 95%. The results show that when the deformation amount reaches 80%,
the strength of posite material keeps on increasing, whereas the elongation decreases. However, if the
deformation amount increases more, the strength of the mate