殷晓龙,吴亚威,郭润宇,王婉,马少彬,闫文杰

• 1:中原工学院机电学院

摘要(Abstract)：

采用深冷挤出切削法(CT-EM)制备了6061铝合金切削带材,研究了CT-EM切屑与常温挤出切削(RT-EM)切屑的微观组织、热稳定性及摩擦磨损性能。结果表明:在相同的切削速度下,CT-EM制备的切屑要比RT-EM制备的切屑硬度高13.2%;在不同的摩擦载荷下,CT-EM切屑的摩擦系数均比RT-EM切屑的摩擦系数低,表明其耐磨性能有所提升;随着摩擦载荷的增加,切屑的摩擦系数均降低;经250℃退火处理1 h后,CT-EM切屑组织内的位错密度有所降低,晶粒尺寸保持在超细晶的范围之内,可以维持较好的热稳定性。经450℃退火处理1 h后,CT-EM切屑组织内的位错消失,晶粒尺寸增大为微米级,失去热稳定性;在150～450℃退火处理1 h后,CT-EM切屑的硬度先上升后快速下降,最后趋于稳定;在250℃退火处理0.5～2 h后,CT-EM切屑的硬度在刚开始的0.5 h内快速降低,之后逐渐趋于稳定。

关键词(KeyWords)： 6061铝合金;深冷挤出切削;微观组织;热稳定性;摩擦磨损性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52105499);; 中原工学院学科青年硕导培育计划项目(SD202406);; 中原工学院基本科研业务费专项资金项目(K2022YY001);; 中原工学院青年骨干教师资助项目(2024XQG09)

作者(Author): 殷晓龙,吴亚威,郭润宇,王婉,马少彬,闫文杰

DOI: 10.13289/j.issn.1009-6264.2024-0360

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