高温熔融金属圆角成型的分子动力学模拟  

Molecular Dynamics Simulation of High Temperature Molten Metal Fillet Forming

作　　者：娄建伟 王港 李武杰 刘伊梅 李经民[1] LOU Jian-wei;WANG Gang;LI Wu-jie;LIU Yi-mei;LI Jing-min(School of Mechanical Engineering,Dalian University of Technology,Dalian 116024,China;AECC Shenyang Liming Aero-Engine Co.,Ltd.,Shenyang 110043,China)

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024 [2]中国航发沈阳黎明航空发动机有限责任公司,辽宁沈阳110043

出　　处：《机械工程与自动化》2022年第6期84-86,共3页Mechanical Engineering & Automation

摘　　要：在钎焊过程中,钎料熔化的同时也往往伴随着金属基底的溶解,基于材料的热力学特性,分别模拟了1200 K和1500 K温度时液态银在T型镍基底上的溶解成型过程。模拟结果表明:基底的溶解效应对于液态金属的润湿铺展具有促进作用,并且低温溶解圆角成型速度显著低于高温溶解体系。得到了熔融金属圆角成型时三相线位置上升高度与时间的关系,可为研究钎焊机理以及改善钎焊工艺提供理论基础。During the brazing process,the melting of the brazing filler metal is often accompanied by the dissolution of the metal substrate.Based on the thermodynamic properties of the material,the dissolution and forming processes of liquid silver on the T-type nickel substrate at 1200 K and 1500 K were simulated respectively.The results show that the dissolution effect of the substrate promotes the wetting and spreading of the liquid metal,and the forming speed of the low temperature dissolution system is significantly lower than that of the high temperature dissolution system.In this paper,the relationship between the rising height of the three-phase line and the time during the forming of the molten metal fillet is obtained,which can provide a theoretical basis for the study of the brazing mechanism and the improvement of the brazing process.

关 键 词：高温钎焊 基底溶解 熔融金属 圆角成型 分子动力学 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TG409[自动化与计算机技术—计算机科学与技术]