摘要
脉冲TIG (pulsed tungsten inert gas,PTIG)增材制造技术属于电弧增材制造技术的分支,其最显著的优势是成本低、沉积率和材料利用率高,适用于大尺寸结构件的制造。本工作从实验研究和数值模拟的角度,着重介绍了PTIG增材制造成形件成形质量控制、微观组织及性能控制方面的研究成果,总结了当前研究存在的不足。基于对成形件成形质量、微观组织及性能的准确预测和主动控制,提出了PTIG增材制造技术有待深入的研究方向,即:工艺因素对成形质量的影响机理研究、缺陷形成机制及其抑制措施研究、熔池微观组织演变数值模拟研究、成形件内应力和变形的调控机制研究、微观组织与力学性能关系模型的建立。
Additive manufacturing based on PTIG （pulsed tungsten inert gas, PTIG） is a branch of arc additive manufacturing technique. Its notable advantages are low cost, high deposition rate, high material utilization ratio, and suitable for manufacturing parts of large size. In this paper, the research results on the control of formation quality, microstructure and properties of the parts deposited by PTIG additive manufacturing were emphasized in view of experimental research and numerical simulation. Meanwhile, the shortcomings of current investigations were also summarized. Based on accurate prediction and accurate control on the formation quality, microstructure and properties, the research directions for further study on PTIG additive manufacturing technique in the future were put forward, including the influence mechanism of process factors on the formation quality, defects forming mechanism and the suppression measures, numerical simulation on microstructure evolution in molten pool, formation and regulation mechanisms on internal stress and deformation,and the establishment on quantitative relationship model between the microstructure and mechanical properties.
作者
郭龙龙
贺雨田
鞠录岩
吴泽兵
张勇
吕澜涛
王文娟
GUO Long-long;HE Yu-tian;JU Lu-yan;WU Ze-bing;ZHANG Yong;LYU Lan-tao;WANG Wen-juan(Mechanical Engineering College,Xi＇an Shiyou University,Xi＇an 710065,China)
出处
《材料工程》
EI
CAS
CSCD
北大核心
2018年第12期10-17,共8页
Journal of Materials Engineering
基金
西安石油大学青年教师科研启动项目(0104-134010025)
关键词
脉冲TIG
增材制造
成形质量
微观组织
力学性能
pulsed TIG
additive manufacturing
formation quality
microstructure
mechanical property
