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2025 05 v.46 65-73
退火冷却速度对粉末冶金含铜钛合金组织与性能的影响
基金项目(Foundation): 国家自然科学基金(52005245); 江苏省重点研发计划(BE2021020); 江苏省大学生科技创新项目(202311276036Z)
邮箱(Email):
DOI: 10.13289/j.issn.1009-6264.2024-0299
中文作者单位:

南京工程学院材料科学与工程学院;江苏省先进结构材料与应用技术重点实验室;南京中盛铁路车辆配件有限公司;

摘要(Abstract):

对粉末冶金(PM)含铜钛合金进行了退火处理,利用X射线衍射仪(XRD)、光学显微镜(OM)、扫描电镜(SEM)、显微硬度计、纳米压痕仪及摩擦磨损试验机等研究了不同冷却速下合金显微组织、硬度及耐磨性能的演变规律。结果表明:α+β两相区退火能够消除粉末冶金样品中有害的富铜相;提高冷却速度可以抑制初生α相粗化,并细化先共析α相与共析组织片层,显著提升合金的力学和摩擦性能;经水冷处理后的样品表现出较佳的综合性能,其显微硬度和纳米硬度分别达到368 HV0.1和4.2 GPa,摩擦系数及磨损率分别为0.58和2.36×10-13 mm~3/(N·m)。

关键词(KeyWords): 含铜钛合金;粉末冶金;退火;冷却速度;力学性能;耐磨性能
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基本信息:

DOI:10.13289/j.issn.1009-6264.2024-0299

中图分类号:TG156.2;TG146.23;TF125.22

引用信息:

[1]陶学伟,吴则路,唐护洋等.退火冷却速度对粉末冶金含铜钛合金组织与性能的影响[J].材料热处理学报,2025,46(05):65-73.DOI:10.13289/j.issn.1009-6264.2024-0299.

基金信息:

国家自然科学基金(52005245); 江苏省重点研发计划(BE2021020); 江苏省大学生科技创新项目(202311276036Z)

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