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所属单位：材料科学与技术学院
发表刊物：JOURNAL OF MANUFACTURING PROCESSES
关键字：Invar alloy Laser melting deposition Microstructure Thermal field
摘要：Considering the laser power, scanning speed and powder feeding rate, the experimental investigation of the laser melting deposition (LMD) with coaxial powder feeding for Fe-36Ni Invar alloy was presented in this paper. The influence of different parameters on morphology of deposition layer (DL) was analyzed in detail. Besides, the microstructure in HAZ of LMD for Fe-36Ni Invar alloy and the width of HAZ were quantitatively studied. Meanwhile, a three-dimensional finite element (FE) model considering the effect of laser power and scanning speed on heat transfer process was established to investigate the thermal field of LMD process for Fe-36Ni Invar alloy. In addition, the linear heat input was introduced into this paper to analyze the comprehensive influence of process parameters on the thermal field during LMD process. Moreover, combining the simulation results of thermal field, the thermal physical mechanism of the microstructure formation in HAZ was discussed. (C) 2017 The Society of Manufacturing Engineers. Published by Elsevier Ltd. All rights reserved.
ISSN号：1526-6125
是否译文：否
发表时间：2018-01-01
合写作者：Meng, Yao,Zhou, Junjie,Qi, Chaoqi,Zhang, Cailin,顾冬冬
通讯作者：占小红