热处理工艺对Fe-Co-Zr-Mo-W-B大块非晶合金断裂韧度的影响  

Effect of Heat Treatment on Fracture Toughness of Fe-Co-Zr-Mo-W-B Bulk Amorphous Alloy

作　　者：肖华星 陈光[1] 陈国良[1,3] 

机构地区：[1]南京理工大学金属纳米材料与技术联合实验室 [2]常州工学院机电工程学院,江苏常州213002 [3]北京科技大学新金属材料国家重点实验室,北京100083

出　　处：《金属热处理》2005年第7期74-77,共4页Heat Treatment of Metals

基　　金：江苏省自然科学基金项目(BK2001053);江苏省高校自然科学研究指导性计划项目(03KJD430005)

摘　　要：采用电弧熔炼母合金、感应加热熔化、铜模吸铸工艺,制备了厚度为1mm的板状FeCoZrMoWB系Fe基大块非晶合金,铸态试样表面及断口光亮,具有典型的金属光泽,但脆性严重。本文采用压痕试验法研究了热处理工艺对铸态Fe基大块非晶合金脆性的影响。结果表明,合适的退火工艺可使Fe基大块非晶合金的断裂韧度提高到铸态的260%。A plate Fe-Co-Zr-Mo-W-B Fe-based bulk amorphous alloy of the thickness of 1 mm was prepared with processes of arc melting alloy ingots, inductive melting and copper mold suction casting. The surfaces and fractures of the cast bulk amorphous alloy samples are agleam and with typical metallic luster, however, the brittleness of the cast alloy is obvious. The effect of heat treatment on the brittleness of the cast alloy was studied by indentation technique. The results show that a proper annealing can increase the fracture toughness to 260% of that as cast.

关 键 词：Fe基大块非晶合金 热处理 压痕试验法 断裂韧度 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG113.25[金属学及工艺—金属材料]