铝合金细化剂细化行为研究现状与展望
Research Status and Prospect of Refining Behavior of Aluminum Alloy Refiners
杨光 1文胜平 1雷志国 1黄晖 1熊湘沅1
作者信息
- 1. 北京工业大学材料与制造学部,北京 100124
- 折叠
摘要
晶粒细化处理能够显著改善铝合金的综合性能,对拓展其应用领域意义重大.本文基于异质形核,探讨了点阵错配模型、边边匹配模型以及自由生长模型,肯定了边边匹配模型在筛选潜在晶粒细化剂方面的高效性;根据自由生长模型关于异质相尺寸、形态、分布等对晶粒细化效果影响的理论研究,归纳了物理、化学方法调控第二相进而优化细化效果的研究进展,并且对第二相尺寸影响细化效果的原因进行了理论阐述,最后对优化晶粒细化剂的方向做了展望.
Abstract
Grain refinement of aluminum alloys can significantly improve their overall performance,which is significant for expanding their applications.Based on the heterogeneous shape nuclei,this paper discussed the dot mismatch model,the edge matching model and the free growth model,and confirmed the efficiency of the edge matching model in screening potential grain refiners.According to theoretical study of the effect of the free growth model on the size,morphology and distribution of heterogeneous phases on the grain refinement effect,the research progress of physical and chemical methods to regulate the second phase and thus optimize the refinement effect was summarized,and the reason why the second phase size affects the refinement effect was theoretically discussed.Finally,the direction of optimizing the grain refinement agent was discussed.
关键词
铝合金/晶粒细化/边边匹配模型/自由生长模型/第二相Key words
aluminum alloy/grain refinement/edge matching model/free growth model/second phase引用本文复制引用
基金项目
国家重点研究开发项目(2021YFB370902)
国家重点研究开发项目(2021YFB3704204)
国家重点研究开发项目(2021YFB3704205)
国家自然科学基金创新研究项目(51621003)
现代交通金属材料与加工技术北京实验室项目()
出版年
2024
国家科技期刊平台
NSTL
万方数据