秦文栋,邵星海,王文焱,谢敬佩,李建军,郭清远

• 1:河南科技大学材料科学与工程学院
• 2:有色金属新材料与先进加工技术省部共建协同创新中心
• 3:中信重工机械股份有限公司

摘要(Abstract)：

以不同形态TC4合金粉末为原料及添加TiC增强相，采用真空热压烧结技术制备了不同的TC4钛合金试样，并对其显微组织、致密度和力学性能进行了观察与分析。结果表明：采用球形TC4粉末为原料及30 MPa烧结压力的真空热压烧结制备的粉末冶金TC4钛合金的致密度可达到98%以上，显微组织由β相和α相组成，并分布有少量的TiV相，抗拉强度为495 MPa,硬度为419 HV0.3,力学性能明显优于以球形TC4粉末为原料无压力烧结的TC4钛合金，略优于以不规则TC4粉末为原料热压烧结的钛合金；在球形TC4粉末中加入4%TiC增强相后，真空热压烧结制备的TC4钛合金的晶粒得到显著细化，TiC相分布在晶界起到第二相强化作用，硬度提高到444 HV0.3,抗拉强度提高到554 MPa。

关键词(KeyWords)： TC4钛合金;TiC增强相;热压烧结;致密度;显微组织

Abstract:

Keywords:

基金项目(Foundation): 河南省重大科技专项(关键领域转动部件用高品质低成本海绵钛关键技术研发及产业231100230200)

作者(Author): 秦文栋,邵星海,王文焱,谢敬佩,李建军,郭清远

DOI: 10.13289/j.issn.1009-6264.2025-0136

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