粉末冶金Ti-45Al-7Nb-0.3W合金板材组织和力学性能研究

来源 :第十八届中国科协年会 | 被引量 : 0次 | 上传用户：bbcr

【摘要】

：

采用X射线衍射仪、扫描电子显微镜、透射电子显微镜和力学拉伸实验等方法对轧态粉末冶金Ti-45Al-7Nb-0.3W合金板材的微观组织、力学性能及变形机制进行了研究.结果表明,合金板材在700℃时,屈服强度达到670MPa,抗拉强度达到874MPa,显示出良好的高温力学性能;合金韧脆转变温度(BDTT)处于800℃-850℃之间;当合金板材在BDTT以下变形时,变形组织中存在大量的位错和变形孪晶;当

【作者】

：

齐叶龙李慧中梁霄鹏朱泽晓刘咏

【机构】

：

中南大学材料科学与工程学院,湖南长沙 410083 中南大学材料科学与工程学院,湖南长沙 4100

【出处】

：

第十八届中国科协年会

【发表日期】

：

2016年3期

【关键词】

：

钛铝铌钨合金包套轧制微观组织力学性能变形机制

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粉末冶金Ti-45Al-7Nb-0.3W合金板材组织和力学性能研究

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