基于新型镁基复合材料的体育器材组织与性能研究  

Microstructure and Properties of New-type Magnesium Alloy Matrix Composite for Sports Apparatus

作　　者：涂春景[1] 罗志扬[2] 

机构地区：[1]井冈山大学体育学院,江西吉安343009 [2]井冈山大学机电工程学院,江西吉安343009

出　　处：《热加工工艺》2015年第10期136-138,141,共4页Hot Working Technology

基　　金：国家自然科学基金项目(51265017)

摘　　要：新型复合材料对体育运动的发展有着广泛而深刻的影响,优良的体育器材对竞技运动成绩提高和群众体育开展有着良好的促进作用。在Mg-3Al-1Zn-0.1Ti-0.3Mn镁合金中添加10vol%碳化硼增强体,采用特制导管和机械搅拌辅助熔炼制备了体育器材用镁基复合材料,并进行了OM、SEM和XRD分析以及拉伸试验和腐蚀试验。结果表明:该复合材料由α-Mg相、Mg17Al12相和B4C相组成,具有较佳的室温和高温力学性能、良好的耐腐蚀性能;室温抗拉强度和伸长率分别为427MPa、12.3%。500℃抗拉强度仅较室温减小9%,腐蚀电位较商用AZ31镁合金正移284m V。镁基复合材料良好的拉伸、耐腐蚀性等性能有利于优化体育器材的性能,进而提高器械的功效和耐用性。Adding 10vol% B4 C strengthener in Mg-3Al-1Zn-0.1Ti-0.3Mn alloy,the magnesium alloy matrix composite for sports apparatus was produced with a special duct and mechanically-agitated.The analysis of OM,SEM and XRD were carried out,the tensile test and corrosion test were done.The results show that the magnesium alloy matrix composite has better mechanical properties at room and high temperature,and good corrosion resistance,which is composed of α-Mg phase,Mg17Al12 phase and B4 C phase,particularly,the tensile strength and elongation at room temperature of the sample is 427 MPa,12.3%respectively.The tensile strength at 500℃ just decreases by 9% compared with room temperature.Furthermore,compared with commercial AZ31 alloy,the corrosion potential of the sample changes from 284 m V to positive direction.

关 键 词：镁基复合材料 体育器材 机械搅拌 高温力学性能 耐腐蚀性 

分 类 号：TG146[一般工业技术—材料科学与工程]