吉林大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (增刊): 239-0242.

• paper • Previous Articles     Next Articles

Analysis of microstructure and fracture of laser welding of ultrahigh strength steel

YU |Ming1, YU Si-bin1, |ZHANG Zheng-lin2, GU Zheng-wei2   

  1. 1.Roll Forming Institute, Jilin University,Changchun 130022,China；2.College of Materials Science and Engineering, Jilin University,Changchun 130022,China
  • Received:2010-02-07 Online:2010-09-01 Published:2010-09-01

PDF (PC)

635

Abstract:

The advanced laser welding technology was used to connect the ultrahigh strength steels and highquality welded joints were acquired.The author observe the microstructure, test the hardness of the welded joint and analyze the fracture mode of the welded joint by using scanning electron microscope. The results show that good welding quality can be obtained by means of laser continues welding method，and the welded joint internal structure is dense and has no the defects such as crack and shrinkage hole. The shear fracture visage shows that the fracture mode belongs to both ductile fracture and brittle fracture.

Key words: material synthesis and processing technology, laser welding, ultrahigh strength steel, microstructure, fracture

CLC Number: 

  • TG442
[1] JIANG Qiu-yue,YANG Hai-feng,TAN Cai-wang. Strengthening properties of welded joints of 22MnB5 super high strength steel [J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(6): 1806-1810.
[2] KOU Shu-qing, SHI Zhou. Three-dimensional reconstruction of fracture-split connecting rod joint surface and its strength and stiffness [J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(5): 1515-1523.
[3] ZHENG Xiao-yi, SUN Da-qian, LI Xin, DU Gui-gang, XIN Wei-da, REN Zhen-an. Microstructure and properties of cladded Al-Nb layers reinforced by NbAl3 [J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(5): 1531-1536.
[4] ZHAO Yu-guang, YANG Xue-hui, XU Xiao-feng, ZHANG Yang-yang, NING Yu-heng. Effects of Al-10Sr modifiers with different states, modification temperature and holding time on microstructure of ZL114A alloy [J]. 吉林大学学报(工学版), 2018, 48(1): 212-220.
[5] ZHANG Zhi-qiang, LIU Cong-hao, HE Dong-ye, LI Xiang-ji, LI Ji-xuan. Effect of hot stamping process of boron steel on shape precision based on performance gradient distribution [J]. 吉林大学学报(工学版), 2017, 47(6): 1829-1833.
[6] WANG Hui, ZHOU Jie, XIONG Yu, TAO Ya-ping, XIANG Rong. Springback compensation for stamping part with complex surface based on reverse engineering [J]. 吉林大学学报(工学版), 2017, 47(6): 1842-1847.
[7] WANG Chun-sheng, ZOU Li, YANG Xin-hua. Analysis of fatigue life factors of aluminum alloy welded joints based on neighborhood rough set theory [J]. 吉林大学学报(工学版), 2017, 47(6): 1848-1853.
[8] WANG Teng, ZHOU Ming-ru, MA Lian-sheng, QIAO Hong-xia. Fracture grouting crack growth of collapsible loess based on fracture theory [J]. 吉林大学学报(工学版), 2017, 47(5): 1472-1481.
[9] KOU Shu-qing, SONG Wei-feng, SHI Zhou. Fracture splitting simulation and defect analysis of 36MnVS4 connecting rod [J]. 吉林大学学报(工学版), 2017, 47(3): 861-868.
[10] LUN Feng-yan, FU Wen-zhi, LI Ming-zhe, YI Zhuo, WANG Xin-tong, CHEN Xue. Forming of flexible rolling of three-dimensional surface based on bended rolls [J]. 吉林大学学报(工学版), 2017, 47(3): 876-883.
[11] HU Kan, YU Ye, YING Liang, HU Ping, HOU Wen-bin. Optimization design of hot-stamping beam structure considering rollover crash safety of school bus [J]. 吉林大学学报(工学版), 2017, 47(3): 884-890.
[12] CUI Ya-nan, HAN Ji-wei, FENG Lei, LI Jia-di, WANG Le. Microstructure of asphalt under salt freezing cycles [J]. 吉林大学学报(工学版), 2017, 47(2): 452-458.
[13] LI Chun-ling, FAN Ding, WANG Bin, YU Shu-rong. 5A06 aluminum alloy and galvanized steel butt welding-brazing by laser with preset filler powder [J]. 吉林大学学报(工学版), 2016, 46(2): 516-521.
[14] GUAN Qing-feng, LI Yan, HOU Xiu-li, YANG Sheng-zhi, WANG Xiao-tong. Modification of solid solution Mg-Gd-Y-Nd alloy irradiated by high current pulsed electron beam [J]. 吉林大学学报(工学版), 2015, 45(4): 1200-1205.
[15] DUAN Xing-wang,LIU Jian-sheng. Plasticity at elevated temperature and fracture character of 316LN steel [J]. 吉林大学学报(工学版), 2015, 45(2): 494-500.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © Journal of Jilin University(Engineering and Technology Edition), All Rights Reserved.
Tel: +86-431-85095297　Fax: +86-431-85094074　E-mail: xbgxb@jlu.edu.cn
Powered by Beijing Magtech Co. Ltd