Advanced Search
ZHANG Nan1,2, TIAN Zhiling2, DONG Xianchun1, ZHANG Xi1, YANG Jianwei1. Research on relationship between ΔKth and fatigue life of heat-affected coarse grain zone in Q960E[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(7): 106-110. DOI: 10.12073/j.hjxb.2018390185
Citation: ZHANG Nan1,2, TIAN Zhiling2, DONG Xianchun1, ZHANG Xi1, YANG Jianwei1. Research on relationship between ΔKth and fatigue life of heat-affected coarse grain zone in Q960E[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(7): 106-110. DOI: 10.12073/j.hjxb.2018390185
shu

Research on relationship between ΔKth and fatigue life of heat-affected coarse grain zone in Q960E

  • 1. Shougang Research Institute of Technology, Beijing 100043, China;
    2. Central Iron and Steel Research Institute 100081, China

More Information
  • Received Date: December 14, 2016
    Graphical Abstract
    • Abstract
  • Based on the simulation of welding thermal cycle test and fatigue crack propagation test, the fatigue life on coarse grain heat affect zone of high strength steel Q960E, which acted as dynamic load structure, were investigated. The approximate linear relationship between fatigue crack propagation threshold value (ΔKth) by Paris equation under different welding thermal simulation technique and fatigue life under different cyclic loading were obtained. The crystallographic orientation analysis and expansion mechanism of the crack tip in the fatigue crack propagation specimen were discussed by using the electron backscatter diffraction (EBSD) in scanning electric mirror. The results showed that if stress amplitude ΔP was fixed, the fatigue life N increased with the growth of ΔKth. Its working micro-mechanism of prolonging life was due to the orientation differences of substructure, resulting in the formation of large Angle grain boundaries (≥ 15°), which effectively forced the crack to swerve, so as to improve the fatigue life of materials.
    • FullText(HTML)
    • References (9)
  • Joseph C, Benedyk. Light metal in automotive applications[J]. Light Metal Age, 2000, 58(10):34-35.
    Buch A. Fatigue strength calculation[M]. Switzerland:Trans Tech Publications, 1988.
    Morrison M L, Buchanan R A, Liaw P K, et al. Four-point-bending-fatiguetreloy 105 bulk metallic glass[J]. Materials Science and Engineering, 2007, A 467:190-197.
    赵少汴. 抗疲劳设计手册[M]. 北京:机械工业出版社, 2015.
    ASTM E606/E606M-12. Standard text method for strain-controlled fatigue testing[S]. 2012.
    Bouyne E, Flower H M, Lindley T C, et al. Use of EBSD technique to examine microstructure and cracking in a bainitic steel[J]. Scripta Materialia, 1998, 39(3):295-300.[DOI: 10.1016/S1359-6462(98)00170-5]
    温永红, 唐荻, 武会宾, 等. F40级船板低温韧性机理[J]. 北京科技大学学报, 2008, 30(7):724-729. Wen Yonghong, Tang Di, Wu Huibin, et al. Low-temperature toughness characteristics of F40 hull structure steel[J]. Journal of University of Science and Technology Beijing, 30(7):724-729.[DOI: 10.3321/j.issn:1001-053X.2008.07.005]
    蒋金星, 唐荻, 武会宾, 等. E550海洋平台用钢二次裂纹扩展机理研究[J]. 材料工程, 2013, 6:35-39. Jiang Jinxing, Tang Di, Wu Huibin, et al. Analysis of propagation behavior of secondary cracks in the E550 offshore platform steel[J]. Journal of Materials Engineering, 2013, 6:35-39.[DOI: 10.3969/j.issn.1001-4381.2013.02.007]
    雷家峰, 刘羽宴, 杨锐, 等. 一种亚稳β钛合金中疲劳短裂纹穿晶扩展晶体学特征的EBSD研究[J]. 金属学报, 2002, 38(S1):272-276. Lei Jiafeng, Liu Yuyan, Yang Rui, et al. EBSD study on the crystallographic characteristics of fatigue crack propagation through a grain boundary in a metastable beta titanium alloy[J]. Acta Metallurgica Sinica, 2002, 38(S1):272-276.
    • Related Articles

  • Related Articles

    [1]ZHOU Yang, QI Bojin. Controlled stability of variable polarity welding current in VPPAW process[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2022, 43(4): 16-25. DOI: 10.12073/j.hjxb.20211215003
    [2]HAN Yongquan, ZHANG Shiquan, PANG Shigang, HONG Haitao. Arc behavior during variable polarity TIG welding of aluminum alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(9): 51-54,59.
    [3]CHENG Lin, HU Shengsun, WANG Zhijiang. Arc pressure analysis in variable polarity TIG welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2014, 35(11): 101-104.
    [4]HAN Yongquan, DU Maohua, CHEN Shujun, WU Yongjun, SHI Yan. Process control of variable polarity keyhole plasma arc welding for aluminum alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2010, (11): 93-96.
    [5]DING Kun, YAO Heqing, FAN Xinghui, WANG Shouyan. Welding arc load characteristics of variable polarity TIG welding and its control strategy at commutation[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (9): 31-34.
    [6]HAN Yongquan, CHEN Shujun, YIN Shuyan, SONG Cheng. Arc stability and its control of VPPA[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (4): 18-20.
    [7]LI Zhi-ning, DU Dong, WANG Li, LIU Xian-li, BAI Jin-bing. Varived damp phenomena of commutation progress in variable polarity plasma arc welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2006, (11): 9-12.
    [8]CHEN Ke-xuan, LI He-qi, LI Chun-xu. Progress in variable polarity plasma arc welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2004, (1): 124-128.
    [9]Geng Zheny, Zhang Guangjun, Deng Yuanzhao, Li Liqun, Yin Shuyan. Processing Property of Variable Polarity power in TIG Arc Welding of Aluminium Alloys[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 1997, (4): 232-237.
    [10]Geng Zheng, Yin Shuyian, Wang Qilong. Development of variable polarity welding power source for Al alloy TIG welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 1994, (3): 179-184.

Catalog

    Get Citation
    XML
    Article views (614) PDF downloads (105) Cited by()
    Turn off MathJax
    Article Contents
    Abstract
    References
    Related Articles

    Website Copyright © Editorial Office of Transactions of the China Welding Institution, Welding Journals Publishing HouseTel：0451-86323218Address：No. 2077, Chuangxin Road, Songbei District, Harbin

    Supported by: Beijing Renhe Information Technology Co. Ltd    Baidu Analytics

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return