摘要
采用电弧熔炼、铜模吸铸法制备Fe基大块非晶合金,利用球-盘式摩擦磨损试验机进行干摩擦磨损试验,研究了铸态Fe基大块非晶合金的摩擦磨损行为及热处理对其耐磨性的影响,利用扫描电子显微镜观察合金磨损表面形貌,分析了Fe基大块非晶合金以及相同成分晶态合金的磨损机理.结果表明:在本试验条件下,铸态Fe基大块非晶合金的耐磨性高于相同成分的晶态合金,热处理可以有效提高铸态Fe基大块非晶合金的耐磨性,在保持完全非晶状态的前提下,退火态非晶合金的磨损率较铸态非晶合金减小约40%;材料的结构和性能对合金的摩擦系数影响不大,当进入稳定阶段后Fe基大块非晶合金的摩擦系数稳定在0.58左右;不同处理状态的Fe基大块非晶合金和相同成分晶态合金的磨损机制不同,非晶合金的磨损机制以疲劳磨损为主兼有磨粒磨损,相同成分晶态合金的磨损机制为粘着磨损和磨粒磨损共同作用的结果.
A Fe-based bulk amorphous alloy was prepared using arc melting and copper mold suction casting. Ballon-disc friction and wear test was carried out in dry sliding condition. Friction and wear behavior of cast Fe-based bulk amorphous alloy and the influence of heat treatments on its wear resistance were investigated. Worn surface morphologies of the samples were observed on a scanning electron microscope, and the wear mechanism of Fe-based bulk amorphous alloy and the crystal alloys with same element as the previous amorphous alloy was analyzed. No significant influence of the alloys＇structure and mechanical performance on friction coefficient of the system was observed. A typical fatigue wear characteristic can be found for the cast and different heat treatment states of the Febased bulk amorphous alloy, whose wear resistance is higher than that of the treatment can effectively enhance the wear resistance of cast Fe-based bulk crystal alloys with same element. Heat amorphous alloy.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2006年第2期140-144,共5页
Tribology
基金
国家自然科学基金重点项目资助(50431030)
江苏省自然科学基金资助项目(BK2001053)
江苏省高校自然科学研究指导性计划资助项目(03KJD430005)
关键词
Fe基大块非晶
热处理
干摩擦
耐磨性
Fe-based bulk amorphous alloy, heat-treatment, dry friction, wear resistance
