微合金化对多相增强铜锆基非晶复合材料组织性能影响  

Effects of Microalloying on Microstructure and Properties of Multiphase Reinforced CuZr Based Amorphous Composites

作　　者：张震 黄润华 吕书林 王锦程[2] 吴树森[1] 郭威 Zhang Zhen;Huang Runhua;LüShulin;Wang Jincheng;Wu Shusen;Guo Wei(State Key Laboratory of Material Processing and Die&.Mould Technology,School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074;State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072;Research Institute of Huazhong University of Science and Technology in Shenzhen,Shenzhen 518057)

机构地区：[1]华中科技大学材料科学与工程学院、材料成形与模具技术全国重点实验室,武汉430074 [2]西北工业大学凝固技术国家重点实验室,西安710072 [3]深圳华中科技大学研究院,深圳518057

出　　处：《特种铸造及有色合金》2024年第3期349-353,共5页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(52101138);湖北省自然科学基金资助项目(2023AFB798);深圳市科技计划资助项目(JCYJ20220530160813032);西北工业大学凝固技术国家重点实验室开放课题资助项目(SKLSP202309)。

摘　　要：以具有多相复合结构的[(Zr_(0.5)Cu_(0.5))_(0.93)Al_(0.07)]_(97)Ta_(3)(摩尔比)非晶复合材料为基础,通过不同元素的微合金化(Ti,Co,Sn),探讨了合金化元素对多相复合材料微观组织及力学性能的影响。结果表明,添加微量Sn元素能够同时提高基体的非晶形成能力与B2-CuZr相的热稳定性,避免凝固过程中B2-CuZr相发生马氏体相变或基体中其他结晶相的析出,获得了增强相均匀分散的多相增强铜锆基非晶复合材料。开发的[Zr_(0.5)Cu_(0.5)_(0.925)Al_(0.07)Sn_(0.005)]_(97)Ta_(3)非晶复合材料的抗压强度与塑性应变相比[(Zr_(0.5)Cu_(0.5))_(0.93)Al_(0.07)]_(97)Ta_(3)分别提升了9.6%和131.3%。Based on the[(Zr_(0.5)Cu_(0.5))_(0.93)Al_(0.07)]_(97)Ta_(3)(atomic ratio)amorphous composites with multiphase compound structure,the effects of alloying elements on microstructure and mechanical properties were investigated through microalloying of different elements(Ti,Co,Sn).The results indicate that Sn addition can simultaneously improve the amorphous forming ability of the matrix and thermal stability of B2-CuZr phase,which avoids the occurrence of martensitic transformation of B2-CuZr phase or precipitation of other crystalline phases in the matrix during the solidification process,leading to the multiphase reinforced Cu-Zr based amorphous composites with uniformly dispersed reinforcing phases.The compressive strength and plastic deformation of developed[(Zr_(0.5)Cu_(0.5))_(0.925)Al_(0.07)Sn_(0.005)]_(97)Ta_(3)amorphous composites are increased by 9.6%and 131.3%,respectively,compared with those of[(Zr_(0.5)Cu_(0.5))_(0.93)Al_(0.07)]_(97)Ta_(3).

关 键 词：非晶复合材料 微合金化 多相复合组织 强韧性 

分 类 号：TB331[一般工业技术—材料科学与工程] TG139.8[金属学及工艺—合金]