摘要
利用扫描电镜、能谱分析、显微硬度计测试并分析了热处理对颗粒增强铁基复合材料的组织和硬度的影响。结果表明,随热处理温度升高,材料硬度增高;(450、550、650和750℃)+空冷时,复合材料界面结合良好,界面元素成分稳定,未出现裂纹;550℃+水淬时,靠近陶瓷颗粒的金属基体出现裂纹。该材料适用于750℃高温非急冷环境中,但不适合于冷却速度较高的环境。
The effects of different heat treatments on microstructure of ceramic particles reinforced ferroalloy composite were studied and analyzed by scanning electron microscope(SEM),energy dispersive spectrometer(EDS) and microhardness tester. The results indicate that the hardness of iron matrix composites increases with the increasing temperature. At the annealed temperature of 450,550,650 and 750 ℃ and air-cooled,the interface of the composites is well combined,and the component of the interface is stable,and the crack does not appear. However,after treating at 550 ℃ and water quenching,a few of cracks on the metal substrate appear near the ceramic particles. The metal matrix composites can be applied at 750 ℃ without urgent cold environment,but are not suitable for the higher cooling speed environment.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2013年第S2期1-5,共5页
Transactions of Materials and Heat Treatment
基金
国家自然基金项目(51271080)
江苏省(国家级)大学生科技创新项目(2012JSSPITP1968)
南京工程学院创新基金项目(CKJB201204)
华南理工大学国家近净成形工程中心开放基金项目(2011002B)
关键词
铁基复合材料
颗粒增强
热处理
硬度
iron matrix compsite
particle reinforced
heat treatment
hardness
