热处理温度对选择性激光熔化TC4钛合金板不同成形面组织和性能的影响

被引：4

作者：

王贞涛 ^{[1
]}

杨尚磊 ^{[1
,2
]}

彭曾 ^{[1
]}

高紫豪 ^{[1
]}

机构：

[1] 上海工程技术大学材料工程学院

[2] 上海工程技术大学上海市激光先进制造技术协同创新中心

来源：

理化检验-物理分册 | 2022年 / 58卷 / 03期

关键词：

选择性激光熔化; TC4钛合金; 热处理; 显微组织; 硬度;

D O I：

暂无

中图分类号：

TG156 [热处理工艺]; TG665 [光能加工设备及其加工]; TG146.23 [];

学科分类号：

摘要：

通过热处理试验、金相检验、扫描电镜观察、X射线衍射分析和硬度测试，分析了热处理温度对选择性激光熔化TC4钛合金板不同成形面的相组成、显微组织和硬度的影响。结果表明：随热处理温度由750℃升高至950℃,选择性激光熔化TC4钛合金板顶面和侧面的针状马氏体α′相不断减少；当热处理温度为850℃时，针状α′相完全转变为α+β相，当热处理温度(950℃)超过α相转变温度时，β相含量升高；钛合金板顶面基本没有柱状β相，形成了等轴状β相，其侧面仍存在柱状β相；钛合金板顶面和侧面的硬度随着温度的升高呈先减小后增大的趋势。

引用

页码：1 / 5+48 +48

页数：6

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