Advanced Search
JIANG Zhizhong, HUANG Jihua, HU Jie, CHEN Shuhai. Microstructure and mechanical properties of laser welded joints of CLAM steel used for fusion reactor[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2012, (2): 5-8.
Citation: JIANG Zhizhong, HUANG Jihua, HU Jie, CHEN Shuhai. Microstructure and mechanical properties of laser welded joints of CLAM steel used for fusion reactor[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2012, (2): 5-8.

Microstructure and mechanical properties of laser welded joints of CLAM steel used for fusion reactor

More Information
  • Received Date: December 19, 2010
  • China low activation martensitic steel used for fusion reactor was welded by laser welding process,and followed by the post-welding heat treatment(PWHT) at 740℃ for 1 h.The characteristics of microstructure and mechanical properties of welded joints were analyzed before and after PWHT,respectively.The results show that the weld seam with good formation and without defects has been obtained.In as-welded condition,the microstructure obtained in weld metal is quench hardening lath martensite with high percentage of delta ferrite.The hardness value of full quenched zone is up to 545 HV due to its fine lath martensie besides of small percentage of delta ferrite.After the PWHT,the lath martensite,in the weld metal and the completely quenching zone,transformed into tempered martensite and tempered sorbite with dispersed carbides,which decreased the hardenability of the weld joint obviously,and the highest microhardness was only 15% higher than that of the base material.The tensile strength of weld joint was higher than the base material both before and after the PWHT.Although the PWHT could decrease the strength of the weld joint,it was also about 98% of the original base material.
  • Related Articles

    [1]BA Peipei, DONG Zhihong, ZHANG Wei, PENG Xiao. Microstructure and mechanical properties of 12CrNi2 alloy steel manufactured by selective laser melting[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2021, 42(8): 8-17. DOI: 10.12073/j.hjxb.20210323003
    [2]WANG Lei, XU Xuezong, WANG Kehong, HUANG Yong, PENG Yong, YANG Dongqing. Microstructures and mechanical properties of fiber laser beam welded 7A52 alloy joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2020, 41(10): 28-31, 37. DOI: 10.12073/j.hjxb.20200518001
    [3]ZHANG Chao, CUI Lei, LIU Yongchang, WANG Dongpo, ZHOU Mengbing. Microstructure and mechanical properties of friction stir welded joints of reduced activation ferritic-martensitic steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(6): 52-57. DOI: 10.12073/j.hjxb.2019400154
    [4]ZHANG Jianchao1, QIAO Junnan1, WU Shikai1, LIAO Hongbin2, WANG Xiaoyu2. Microstructure and mechanical properties of fiber laser welded joints of reduced activation ferritic/martensitic CLF-1 steel heavy plate[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(4): 124-128. DOI: 10.12073/j.hjxb.2018390109
    [5]ZHAO Xudong, XIAO Rongshi. Microstructure and mechanical properties of aluminum alloy and galvanized steel joints by fiber laser fusion welding-brazing using a rectangular spot with filler powder[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2013, (5): 41-44.
    [6]ZHANG Man, XUE Songbai, DAI Wei, LOU Yinbin, WANG Shuiqing. Mechanical properties and microstructure of 3003 Al-alloy brazed joint with Zn-Al filler metal[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2011, (3): 61-64.
    [7]JIANG Zhizhong, HUANG Jihua, CHEN Shuhai, JU Xin. Microstructure transformation and mechanical properties of electron beam welded joints of fusion CLAM steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2011, (3): 45-48.
    [8]ZHANG Weihua, QIU Xiaoming, SUN Daqian, ZHAO Xihua. Microstructure and mechanical properties of CO2 laser-welded joint of ZL109 aluminum silicon alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2010, (6): 45-48.
    [9]CHENG Donghai, HUANG Jihua, LIN Haifan, ZHANG Hua. Microstructure and mechanical analysis of Ti-6Al-4V laser butt weld joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2009, (2): 103-106.
    [10]SONG Jianling, LIN Sanbao, YANG Chunli, FAN Chenglei. Microstructure and mechanical properties of TIG brazing of stainless steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2008, (4): 105-108.

Catalog

    Article views (198) PDF downloads (96) Cited by()

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return