[1]武靖伟,王植民,王志刚,等.热处理对N06200镍基合金与S32168不锈钢焊接接头组织与性能的影响[J].焊管,2024,47(5):18-25.[doi:10.19291/j.cnki.1001-3938.2024.05.003]
 WU Jingwei,WANG Zhimin,WANG Zhigang,et al.Effect of Heat Treatment on Microstructure and Properties of Welded Joint of N06200 Nickel-based Alloy and S32168 Stainless Steel[J].,2024,47(5):18-25.[doi:10.19291/j.cnki.1001-3938.2024.05.003]
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热处理对N06200镍基合金与S32168不锈钢焊接接头组织与性能的影响()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
47
期数:
2024年第5期
页码:
18-25
栏目:
试验与研究
出版日期:
2024-05-28

文章信息/Info

Title:
Effect of Heat Treatment on Microstructure and Properties of Welded Joint of N06200 Nickel-based Alloy and S32168 Stainless Steel
文章编号:
10.19291/j.cnki.1001-3938.2024.05.003
作者:
武靖伟王植民王志刚孔凡红李彦青胡广岐王洋
1.兰州兰石重型装备股份有限公司,兰州 730314;
2.青岛兰石重型机械设备有限公司,山东 青岛 266426
Author(s):
WU JingweiWANG ZhiminWANG ZhigangKONG FanhongLI YanqingHU GuangqiWANG Yang
1.Lanzhou LS Heavy Equipment Co., Ltd., Lanzhou 730314, China;
2.Qingdao LS Heavy Machinery Equipment Co., Ltd., Qingdao 266426, Shandong, China
关键词:
热处理N06200镍基合金S32168不锈钢TIG焊接
Keywords:
heat treatmentN06200 nickel?ased alloyS32168 stainless steelTIG welding
分类号:
TG407
DOI:
10.19291/j.cnki.1001-3938.2024.05.003
文献标志码:
A
摘要:
针对厚度6 mm N06200镍基合金和S32168不锈钢手工TIG焊接试板,采用三种热处理工艺对不同状态下焊接接头的微观组织、力学性能、断口形貌及耐腐蚀性能进行分析对比。结果表明:N06200镍基合金与S32168不锈钢TIG焊接接头组织为等轴晶奥氏体和垂直于熔合线方向生长的树枝晶组成;1 050 ℃热处理后焊接接头的抗拉强度最高为736 MPa,与N06200母材强度接近,较未热处理的焊接接头的抗拉强度(675 MPa)提高了9.05%;未热处理和1 050 ℃热处理后的焊接接头断裂方式都为韧性断裂,1 150 ℃热处理后的焊接接头断裂方式为韧性+脆性混合型断裂,焊缝区域硬度高于其他区域;界面组织为靠近N06200镍基合金侧的IMCs为NiFe和Ni2Cr,靠近S32168不锈钢侧的IMCs为FeCr和Ni3Fe;NiFe相晶粒的主要织构为<011>丝织构,Ni3Fe相晶粒的取向较明显,为强烈的<111>丝织构组成。
Abstract:
N06200 nickel-based alloy with thickness of 6 mm and S32168 stainless steel manual TIG welding joints with three heat treatment processes are analyzed and compared by microstructure, mechanical properties, fracture morphology and corrosion properties. The results show that the TIG welded joint of N06200 nickel-based alloy and S32168 stainless steel is composed of equiaxed austenite and dendrite growing perpendicular to the fusion line. The maximum tensile strength of the welded joint after heat treatment at 1 050 ℃ is 736 MPa, which is close to the strength of N06200 base metal, and 9.05% higher than that of the welded joint without heat treatment (675 MPa). The welded joints without heat treatment and with 1 050 ℃ heat treatment are both ductile fracture, the fracture mode of the welded joints with 1 050 ℃ heat treatment is mixed ductile and brittle fracture, and the hardness of the weld area is higher than that of other areas. The IMCs near the N06200 nickel-based alloy side are NiFe and Ni2Cr, and the IMCs near the S32168 stainless steel side are composed of FeCr and Ni3Fe. The main texture of the grains in NiFe phase is <011> fiber texture, and the orientation of the grains in Ni3Fe phase is more obvious, which is <111> fiber texture.

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备注/Memo

备注/Memo:
收稿日期:2024-01-24
作者简介:武靖伟(1992—),男,工程师,主要从事压力容器焊接、异种材料连接的研究工作。
更新日期/Last Update: 2024-05-29