Influence of Repair Welding Time on Microstructure and MechanicalProperties of 30CrMnSiA Steel Joint

WANG Haojun; ZHANG Bingxian; MA Lingjun; LEI Longyu; ZHANG Zhiqiang; DU Mingke; ZHANG Min

doi:10.11973/jxgccl202306013

Materials and Mechanical Engineering > 2023 > 47(6): 72-77. > DOI: 10.11973/jxgccl202306013

WANG Haojun, ZHANG Bingxian, MA Lingjun, LEI Longyu, ZHANG Zhiqiang, DU Mingke, ZHANG Min. Influence of Repair Welding Time on Microstructure and MechanicalProperties of 30CrMnSiA Steel Joint[J]. Materials and Mechanical Engineering, 2023, 47(6): 72-77. DOI: 10.11973/jxgccl202306013

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Influence of Repair Welding Time on Microstructure and MechanicalProperties of 30CrMnSiA Steel Joint

1. AVIC Xi'an Aircraft Industry Group Company LTD, Xi'an 710089, China;
2. School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

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Received Date: April 26, 2022
Revised Date: May 21, 2023

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Abstract

Abstract

Multiple repair welding (for three and four times) tests were carried out on 30CrMnSiA welded joint by shielded metal arc welding. The effect of the repair welding time on the microstructure and mechanical properties of the joint was studied. The results show that increasing repair welding time had little effect on the microstructure type of the joint weld zone. The microstructures of the original weld and the repairing weld both consisted of austenite columnar crystals. Increasing repair welding time could lead to grain coarsening in the original weld zone, and reduce the distribution density of high angle grain boundaries and martensitic quantities in the heat-affected zone, resulting in negative effects on the strength of the joint. The tensile strength of the four-time repair welding joint was reduced by 7.8% and the percentage elongation after fracture was reduced by 25.3% comparing with those of the three-time repair welding joint, but the fracture mechanism was still ductile fracture. The bending resistance and hardness of the four-time repair welding joint were also lower than those of the three-time repair welding joint.
- repair welding,
- 30CrMnSiA steel,
- microstructure,
- mechanical property

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[1]	FU Y L,HU J,SHEN X F,et al.Surface hardening of 30CrMnSiA steel using continuous electron beam[J].Nuclear Instruments and Methods in Physics Research Section B:Beam Interactions with Materials and Atoms,2017,410:207-214.
[2]	WANG L Z,WU J J,HUANG X F,et al.SLM-manufactured 30CrMnSiA alloy:Mechanical properties and microstructural effects of designed heat treatment[J].Optics & Laser Technology,2018,107:89-98.
[3]	李召华,王春净,罗湘燕.30CrMnSiA钢的最终热处理工艺研究[J].新技术新工艺,2017(10):1-3. LI Z H,WANG C J,LUO X Y.Research on the final heat treatment press of 30CrMnSiA steel[J].New Technology & New Process,2017(10):1-3.
[4]	吴子恺,陈伟,周海铭,等.回火温度对30CrMnSiA钢力学性能的影响[J].金属热处理,2019,44(2):163-167. WU Z K,CHEN W,ZHOU H M,et al.Effect of tempering temperature on mechanical properties of 30CrMnSiA steel[J].Heat Treatment of Metals,2019,44(2):163-167.
[5]	CARPENTER K R,DISSANAYAKA P,STERJOVSKI Z,et al.The effects of multiple repair welds on a quenched and tempered steel for naval vessels[J].Welding in the World,2021,65(10):1997-2012.
[6]	SU Y H,WEI Z Y,LI G,et al.Effect of reversed austenite on mechanical properties of ZG06Cr13Ni4Mo repair welded joint[J].Coatings,2021,12(1):1.
[7]	SHOJAATI M,KASHANI BOZORG S F,VATANARA M,et al.The heat affected zone of X20Cr13 martensitic stainless steel after multiple repair welding:Microstructure and mechanical properties assessment[J].International Journal of Pressure Vessels and Piping,2020,188:104205.
[8]	ASHOK KUMAR P,SHAJAN N,ARORA K S,et al.Repair welding procedure for P460NH grade steel making ladles[J].Indian Welding Journal,2018,51(2):57.
[9]	贾宝丽,吴俊峰,李攀,等.中碳调质钢30CrMnSiA补焊工艺方法研究[J].焊管,2017,40(5):49-51. JIA B L,WU J F,LI P,et al.Research on medium carbon quenched and tempered steel 30CrMnSiA repair welding technology[J].Welded Pipe and Tube,2017,40(5):49-51.
[10]	张举麟,张华松,李波涛,等.补焊对30CrMnSiA高强钢焊接接头力学性能的影响[J].机械工程材料,2017,41(9):85-87. ZHANG J L,ZHANG H S,LI B T,et al.Influence of repair welding on mechanical properties of 30CrMnSiA high strength steel welded joint[J].Materials for Mechanical Engineering,2017,41(9):85-87.
[11]	张志强,秦仁耀,孙涛,等.30CrMnSiA钢激光熔覆接头的微观组织和性能[J].焊接技术,2018,47(12):9-14. ZHANG Z Q,QIN R Y,SUN T,et al.Microstructure and properties of laser cladding joints of 30CrMnSiA steel[J].Welding Technology,2018,47(12):9-14.
[12]	万里鹏,肖熙,江鹏,等.多次补焊对30CrMnSiA高强钢焊接接头组织和疲劳性能的影响[J].热加工工艺,2015,44(21):210-212. WAN L P,XIAO X,JIANG P,et al.Effect of multiple repairing weld on microstructure and fatigue property of welded joints of 30CrMnSiA high strength steel[J].Hot Working Technology,2015,44(21):210-212.
[13]	QI X N,HUAN P C,WANG X N,et al.Study on the mechanism of heat input on the grain boundary distribution and impact toughness in CGHAZ of X100 pipeline steel from the aspect of variant[J].Materials Characterization,2021,179:111344.

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