王微,陈武,彭德林

• 1:安徽机电职业技术学院机械系
• 2:常州博瑞电力自动化设备有限公司
• 3:哈尔滨工业大学材料科学与工程学院

摘要(Abstract)：

采用真空水冷铜坩埚感应熔炼炉及石墨型离心铸造工艺制备了Ti-48Al-2Cr合金,随后对其进行真空退火处理。通过扫描电镜观察了合金的微观结构以及断口形貌,采用维氏硬度计、冲击试验机测试了合金的显微硬度和冲击性能。结果表明:热处理对Ti-48Al-2Cr合金的显微组织无显著影响,合金显微组织为双相结构,在晶界出现了Cr元素微观偏析,主要形貌为柱状晶,热处理后形成的等轴晶分散于基体组织上,并改善了合金的冲击韧性和抗断裂变形能力,但对其显微硬度影响不大。

关键词(KeyWords)： Ti-48Al-2Cr;热处理;显微硬度;冲击性能;断裂韧性

Abstract:

Keywords:

基金项目(Foundation): 安徽省高校自然科学研究重点项目(KJ2018A0860)

作者(Author): 王微,陈武,彭德林

DOI: 10.13289/j.issn.1009-6264.2019-0031

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