[1]李 娟,李 霄,李磊磊,等.FM 52M熔敷金属微观组织及热裂纹敏感性分析[J].焊管,2021,44(2):11-15.[doi:10.19291/j.cnki.1001-3938.2021.02.003]
 LI Juan,LI Xiao,LI Leilei,et al.Microstructure and Hot Crack Sensitivity Analysis of FM 52M Deposited Metal[J].,2021,44(2):11-15.[doi:10.19291/j.cnki.1001-3938.2021.02.003]
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FM 52M熔敷金属微观组织及热裂纹敏感性分析()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
第44卷
期数:
2021年第2期
页码:
11-15
栏目:
试验与研究
出版日期:
2021-02-28

文章信息/Info

Title:
Microstructure and Hot Crack Sensitivity Analysis of FM 52M Deposited Metal
文章编号:
10.19291/j.cnki.1001-3938.2021.02.003
作者:
李 娟李 霄李磊磊马 欢乔佳轶朱鹏龙
西安石油大学 材料科学与工程学院,西安 710065
Author(s):
LI Juan LI Xiao LI Leilei MA Huan QIAO Jiayi ZHU Penglong
School of Materials Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China
关键词:
690镍基合金FM 52M微观组织热裂敏感性
Keywords:
690 Ni-base alloy FM 52M microstructure hot cracking sensitivity
分类号:
TG142.33
DOI:
10.19291/j.cnki.1001-3938.2021.02.003
文献标志码:
A
摘要:
为了明确Inconel 52M镍基合金熔敷金属开裂原因,采用开槽法制备Inconel 52M镍基合金熔敷金属横向可调拘束试样,采用万能试验机进行不同应变的加载,以分析熔敷金属热裂纹的敏感性,并采用扫描电镜和透射电镜分析熔敷金属微观组织。结果显示,690镍基合金的熔敷金属晶界上存在较多M23C6型碳化物,M23C6型碳化物与γ′形成黑白相间的层片状的共析组织,且与母相的晶界形成尖角。分析表明,由于与母相之间存在较大的错配度,从而导致其在应变作用下脱离母相,形成微孔洞,多个微孔洞连接后形成裂纹。可调拘束试验结果表明,当熔敷金属处于焊接热影响区时,若外加应变超过2.4%易产生热裂纹,随应变增大裂纹进一步扩展。
Abstract:
In order to find out the cracking reason of Inconel 52M Ni-base alloy deposited metal, the transverse adjustable restraint specimen of Inconel 52M Ni-base alloy deposited metal was prepared by slotting method. The sensitivity of hot cracking of the deposited metal was analyzed by loading different strains with universal testing machine, and the microstructure of the deposited metal was analyzed by scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that there are more M23C6 carbides on the grain boundary of 690 Ni-based alloy deposited metal. M23C6 carbides and γ′ form a black-and-white lamellar eutectoid structure, and form a sharp angle with the grain boundary of parent phase. The analysis shows that there is a large degree of mismatch with the parent phase, which leads to its separation from the parent phase under the strain and the formation of micropores. After multiple micropores are connected, cracks are formed. The adjustable restraint test results show that when the deposited metal is in the welding heat affected zone, if the applied strain exceeds 2.4%, it is easy to produce hot cracks, and the cracks will further expand with the increase of strain.

参考文献/References:

[1] 冯伟,徐锴,魏涛,等. 双金属镍基825复合板焊接技术的研究[J]. 焊管,2019,42(6):43-46.

[2] 张西雷,薛慧,唐远刚. 镍基耐蚀合金焊接工艺研究[J]. 焊管,2018,41(4):28-30.
[3] 韩波,徐锴,郭枭,等. Inconel 690带极电渣堆焊熔敷金属力学性能[J]. 焊接,2018(6):43-47.
[4] 谷雨,黄逸峰,张俊宝,等. 国产WNi 690焊条熔敷金属高温失塑裂纹敏感性研究[J]. 压力容器,2020(9):1-5.
[5] 曹睿,刘刚,陈剑虹,等. 镍基材料焊接中高温失塑裂纹DDC的生成机理及研究进展[J]. 焊接,2018(7):7-13.
[6] 陈静青,陆皓,陈辉,等. 晶粒尺度对镍基高温合金的高温失塑裂纹敏感性的影响[J]. 电焊机,2015(6):21-25.
[7] 马姝丽,罗英,陈静青,等. 镍基高温合金的裂纹敏感性及微观组织分析[J]. 热加工工艺,2013,42(13):13-15.
[8] 郭枭,何鹏,徐锴,等. 一种核电用镍基合金焊丝熔敷金属的组织与性能[J]. 焊接学报,2020,41(4):26-30.
[9] 崔巍. 镍基合金焊接接头高温失塑裂纹研究[D]. 上海:上海交通大学,2013.
[10] 唐正柱,陈佩寅,吴伟. Nb对镍基合金高温失塑裂纹敏感性的影响机理[J]. 焊接学报,2008(1):109-112.
[11] 唐正柱,陈佩寅,吴伟. Nb和Ti对高温失塑裂纹敏感性影响机理研究[J]. 焊接,2007(11):37-41.
[12] YOUNG G A,CAPOBIANCO T E,PENIK M A,et al. The mechanism of ductility dip craking in nickel-chromium alloys[J]. Welding journal,2018(87):31-43.
[13] 陈俊梅,陆皓,陈静青,等. 镍基合金焊缝DDC裂纹形成机制和调控研究进展[J]. 焊接,2012(4):7-13.
[14] LIPPOLD J C,NISSLEY N E. Further investgations of ductility-dip cracking in high chromium,Ni-base filler metals[J]. Welding in the World,2007,51(9-10):24-30.
[15] NISSLEY N E,LIPPOLD J C. Ductility-dip cracking susceptibility of nickel-based weld metals part 1:Strain-to-fracyure testing[J]. Welding Journal,2008(87):257-264.
[16] 霍树斌,徐锴,王庆江,等. 690镍基合金焊丝热裂纹测试与评价方法研究[J]. 焊接,2018(4):33-38.
[17] 李慧,夏爽,周邦新,等 .镍基690合金中晶界碳化物析出的研究[J]. 金属学报,2011,47(7):853-858.
[18] 华培涛,陈斯博,张伟红,等. GH4145合金中γ′相析出对晶界片状M23C6相析出的影响[J]. 航空制造技术,2020,63(3):92-95.
[19] 郭岩,周荣灿,侯淑芳,等. 镍基合金的析出相及强化机制[J]. 金属热处理,2011,36(7):46-50.
[20] 王建明,李晓桥,才庆魁. 镍基单晶高温合金γ和γ′相合金元素分布特征[J]. 铸造,2005(5):466-469.

备注/Memo

备注/Memo:
收稿日期:2020-12-02
作者简介:李 娟(1995—),女,硕士,主要从事焊接组织与性能检测研究工作。
更新日期/Last Update: 2021-04-08