使用大尺寸球形Ti60钛合金粉与细小TiB2粉,通过低能球磨与反应热压烧结,成功制备了增强相呈网状分布的TiB晶须增强Ti60合金基(TiBw/Ti60)复合材料.对TiBw/Ti60复合材料进行热处理,以改善其组织结构与力学性能.结果表明:随着固溶温度的升高,TiBw/Ti60复合材料基体中初生a相(密排六方相)含量减少,相应地转变β组织(a'(马氏体)+残留β相(体心立方相))含量增加,TiBw/Ti60复合材料的抗拉强度升高,塑性降低;经过1 100℃/1 h固溶处理之后,TiBw/Ti60复合材料的室温抗拉强度为1 470 MPa,延伸率为1.9％.经过时效处理后,转变β组织中的α'相分解成细小α+β相.经过1 100℃/1 h固溶+ 600℃/8 h时效处理后TiBw/Ti60复合材料的硬度达到HV538,抗拉强度达到1 552 MPa,延伸率为1.5％,经过1 000℃/1 h固溶+600℃/8 h时效处理,其抗拉强度达到1 460 MPa,延伸率为2.2％.
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