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2025 05 v.46 74-84
激光熔化沉积功率与氧含量对Ti-58Ta合金力学性能的影响
基金项目(Foundation): 中国工程物理研究院院长基金自立项目(YZJJZL2024130)
邮箱(Email): xueliuthu@126.com;
DOI: 10.13289/j.issn.1009-6264.2025-0030
中文作者单位:

西南石油大学化学化工学院;中国工程物理研究院材料研究所;

摘要(Abstract):

分别以气雾化法和旋转电极法制备的具有不同氧含量的两种Ti-58Ta合金粉末为原料,采用激光熔化沉积(LMD)技术成功制备了Ti-58Ta合金单壁试样。使用光学显微镜、扫描电镜(SEM)、X射线衍射(XRD)及万能试验机等研究了激光功率与氧含量对合金微观结构、物相组成和力学性能的影响。结果表明:LMD制备的Ti-58Ta合金晶粒为沿沉积方向外延生长的柱状枝晶,枝晶内部和晶间区域主要由β相和α″相构成;随着激光功率的增加,合金致密度和力学性能先增加后减小,当激光功率为1400 W时达到最佳;LMD成型的Ti-58Ta合金中氧含量的增加,可以抑制β→α″相转变,从而影响合金晶格结构和物相含量,增强合金强度、降低合金塑性。

关键词(KeyWords): Ti-58Ta合金;激光熔化沉积;氧含量;β→α″相转变;力学性能
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基本信息:

DOI:10.13289/j.issn.1009-6264.2025-0030

中图分类号:TG146.23;TG665

引用信息:

[1]张小媛,季亚奇,赵城等.激光熔化沉积功率与氧含量对Ti-58Ta合金力学性能的影响[J].材料热处理学报,2025,46(05):74-84.DOI:10.13289/j.issn.1009-6264.2025-0030.

基金信息:

中国工程物理研究院院长基金自立项目(YZJJZL2024130)

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