Temperature and stress fields of multi-track laser cladding

作     者：ZHAO Hong-yun ZHANG Hong-tao XU Chun-hua YANG Xian-qun 赵洪运;张洪涛;徐春华;杨贤群

作者机构：School of Materials Science and EngineeringHarbin Institute of Technology at WeihaiWeihai 264209China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2009年第19卷第S02期

页      面：495-501页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project(HIT(WH)200711)supported by the Study Fund of Harbin Institute of Technology at Weihai China 

主　　题：finite element analysis multi-track cladding stress field transversal crack 

摘      要：Based on genetic algorithm and neural network algorithm,the finite element analyses on the temperature fields and stress fields of multi-track laser cladding were carried out by using the ANSYS *** results show that,in the multi-track cladding process,the temperature field ellipse leans to the cladding formed,and the front cladding has preheating function on the following *** cladding,the longitudinal stress is the largest,the lateral stress is the second,and the thickness direction stress is the *** center of the cladding is in the tensile stress *** longitudinal tensile stress is higher than the lateral or thickness direction stress by several times,and the tensile stress achieves the maximum at the area of joint between the cladding and ***,it is inferred that transversal crack is the most main crack form in multi-track laser ***,the joint between cladding and substrate is the crack sensitive area,and this is consistent with the actual experiments.