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.
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