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
张震 1黄润华 1吕书林 1王锦程 2吴树森 1郭威3
作者信息
- 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. 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;西北工业大学凝固技术国家重点实验室,西安 710072;深圳华中科技大学研究院,深圳 518057
- 折叠
摘要
以具有多相复合结构的[(Zr0.5Cu0.5)0.93Al0.07]97Ta3(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[(Zr0.5Cu0.5)0.925Al0.07Sn0.005]97Ta3 非晶复合材料的抗压强度与塑性应变相比[(Zr0.5Cu0.5)0.93Al0.07]97Ta3 分别提升了9.6%和131.3%.
Abstract
Based on the[(Zr0.5Cu0.5)0.93Al0.07]97Ta3(atomic ratio)amorphous composites with multiphase compound structure,the effects of alloying elements on microstructure and mechanical properties were investigated through micro-alloying of different elements(Ti,Co,Sn).The results indicate that Sn addition can simultaneously improve the amor-phous 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 pro-cess,leading to the multiphase reinforced Cu-Zr based amorphous composites with uniformly dispersed reinforcing phases.The compressive strength and plastic deformation of developed[(Zr0.5Cu0.5)0.925Al0.07Sn0.005]97Ta3 amorphous composites are increased by 9.6%and 131.3%,respectively,compared with those of[(Zr0.5Cu0.5)0.93Al0.07]97Ta3.
关键词
非晶复合材料/微合金化/多相复合组织/强韧性Key words
Amorphous Composites/Microalloying/Multiphase Compound Structure/Strength and Toughness引用本文复制引用
基金项目
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)
出版年
2024
NETL
NSTL
万方数据