[1]孙 咸.基于电弧增材制造的双相不锈钢熔敷层中δ-铁素体表征[J].焊管,2022,45(1):16-25.[doi:10.19291/j.cnki.1001-3938.2022.01.004]
 SUN Xian.Characterization of δ-ferrite in the Deposited Layer of Duplex Stainless Steel based on Wire Arc Additive Manufacturing[J].,2022,45(1):16-25.[doi:10.19291/j.cnki.1001-3938.2022.01.004]
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基于电弧增材制造的双相不锈钢熔敷层中δ-铁素体表征()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
45
期数:
2022年第1期
页码:
16-25
栏目:
综述
出版日期:
2022-01-28

文章信息/Info

Title:
Characterization of δ-ferrite in the Deposited Layer of Duplex Stainless Steel based on Wire Arc Additive Manufacturing
文章编号:
10.19291/j.cnki.1001-3938.2022.01.004
作者:
孙 咸
太原理工大学 焊接材料研究所, 太原 030024
Author(s):
SUN Xian
Institute of Welding Consumables, Taiyuan University of Technology, Taiyuan 030024, China
关键词:
电弧增材制造δ-铁素体双相不锈钢冷金属过渡显微组织
Keywords:
wire arc additive manufacturing δ-ferrite duplex stainless steel cold metal transfer microstructure
分类号:
TG444;TG113.12
DOI:
10.19291/j.cnki.1001-3938.2022.01.004
文献标志码:
A
摘要:
综述了涉及电弧增材制造(wire arc additive manufacturing, WAAM)的双相不锈钢熔敷层中δ-铁素体的特征。结果表明,WAAM的双相不锈钢壁体显微组织是在δ-铁素体基体晶界和晶内分布着不同形态的奥氏体。双相不锈钢填充焊丝化学成分(Creq/Nieq)对WAAM壁体显微组织的影响非常关键;熔敷工艺的影响亦是通过熔池成分(Creq/Nieq)的变化来改变相比例的;热输入的影响不明显。试样中δ-铁素体含量过低,以及晶粒粗化对壁体力学性能产生不利的影响。通过焊丝和工艺方法控制熔池成分(Creq/Nieq),限制δ→γ转变,确保δ-铁素体与奥氏体相比例,同时通过合理选用工艺参数对熔池冷却速度进行控制,以便辅助性遏制δ→γ转变。
Abstract:
The characteristics of δ-ferrite in the deposited layer of duplex stainless steel involving wire arc additive manufacturing (WAAM) were reviewed. The results show that the microstructure of duplex stainless steel wall of WAAM is composed of austenite with different forms distributed at the grain boundary and in the grain of δ-ferrite matrix. The chemical composition of duplex stainless steel filler wire (Creq / Nieq) is very important to the microstructure of WAAM wall. The influence of deposition process is also to change the phase ratio through the change of molten pool composition (Creq / Nieq); the effect of heat input is not obvious. In the sample, Low δ-ferrite content and grain coarsening have adverse effects on the mechanical properties of the wall. The composition of molten pool (Creq / Nieq) is controlled by welding wire and process method to limit the transformation from δ to γ and ensure the ratio of δ-ferrite to austenite, and the cooling rate of molten pool is controlled by reasonable selection of process parameters, so as to auxiliary restrain the transformation from δ to γ.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2021-11-10作者简介:孙 咸,男,教授,主要从事焊接材料及金属焊接性方面的研究和教学工作,对焊接材料软件开发具有丰富经验。获国家科技进步二等奖1项(2000年),省(部)级科技进步一等奖2项,二等奖3项,1992年获国务院颁发的政府特殊津贴,已发表学术论文200余篇。
更新日期/Last Update: 2022-02-10