张珊珊,刘元才,徐铁伟,杨发展

• 1:青岛理工大学机械与汽车工程学院
• 2:工业流体节能与污染控制教育部重点实验室

摘要(Abstract)：

研究了退火处理对粉末床熔融(Powder bed fusion, PBF)制备的Ti6Al4V合金在腐蚀环境中摩擦磨损行为的影响，由微观组织结构中α/α′相形貌及含量入手，分析造成PBF-Ti6Al4V合金力学性能和耐腐蚀磨损性能差异的机理。结果表明：相同热处理工艺下合金平行成型方向的强度和硬度高于垂直成型方向，随退火温度的升高，PBF成型内应力减小，相尺寸增大，合金的强度和硬度有所下降，且垂直和平行成型方向的差异减小。PBF-Ti6Al4V合金在Hanks体液中的磨损机制主要为磨粒磨损和粘附磨损。800℃退火处理的合金具有最佳的综合性能，XY面和XZ面摩擦腐蚀电流分别为4.04×10~(-7)和2.77×10~(-7) A/cm~2,磨损量分别为21.97和19.99μm~3。

关键词(KeyWords)： 钛合金;粉末床熔融;各向异性;摩擦磨损

Abstract:

Keywords:

基金项目(Foundation): 山东省自然科学基金面上项目(ZR2024ME184,ZR2020ME006);; 山东省重点研发计划项目(2018GGX102027)

作者(Author): 张珊珊,刘元才,徐铁伟,杨发展

DOI: 10.13289/j.issn.1009-6264.2024-0307

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