Advanced Search
LI Shengli, YANG Xinqi, TANG Wenshen, LI Huijun. Microstructure and mechanical properties of friction stir welded novel 9Cr-1Mo steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(4): 28-35. DOI: 10.12073/j.hjxb.2019400095
Citation: LI Shengli, YANG Xinqi, TANG Wenshen, LI Huijun. Microstructure and mechanical properties of friction stir welded novel 9Cr-1Mo steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(4): 28-35. DOI: 10.12073/j.hjxb.2019400095
shu

Microstructure and mechanical properties of friction stir welded novel 9Cr-1Mo steel

  • Tianjin Key Laboratory of Advanced Joining Technology，Tianjin University, Tianjin 300350, China

More Information
  • Received Date: November 06, 2017
    Graphical Abstract
    • Abstract
  • The novel 9Cr-1Mo ferritic heat-resistant steel was selected to conduct friction stir welding experiment adopted tungsten-rhenium alloy tools, and the variation laws of weld formation, microstructure and mechanical properties were discussed. The results indicated that no defect welded joints could be obtained with the rotation speed of 300 and 400 r/min, and welding speed of 50 mm/min; the weld zone was mainly composed of stir zone and thermomechanical affected zone, which had obvious characteristics of hardened martensite microstructure; the high temperature heat affected zone presented mixed microstructures of hardened martensite and tempered martensite, and the low temperature heat affected zone showed over tempered martensite. The grains in the stir zone were refined and the average grain size of the stir zone was about 69.2% of that of the base metal. The weld zone had been significantly hardened, and the maximum hardness in the weld zone was more than 2.0 times of that of the base metal. The ultimate tensile strength of the welded joint reached about 98% of that of the base metal, and the V-shaped notched impact absorbed energy of the stir zone and heat affected zone reached 77.8% and 87.4% of that of the base metal respectively. Those results indicated that the friction stir welded joint still has the better matching between strength and toughness.
    • FullText(HTML)
    • References (17)
  • Wu Guangfeng, Liu Hong, Ma Zhifei. Study on raising impact toughness of welded joint of P91 heat resistant steel[J]. Hot Working Technology, 2007, 36(11): 30 − 32
    Zhou X, Liu C, Yu L, et al. Phase transformation behavior and microstructural control of high-Cr martensitic/ferritic heat-resistant steels for power and nuclear plants: a review[J]. Journal of Materials Science & Technology, 2015, 31(3): 235 − 42.
    Klueh R L. Elevated temperature ferritic and martensitic steels and their application to future nuclear reactors[J]. International Materials Reviews, 2013, 50(5): 287 − 310.
    Zhang Jing, Han Wentuo, Chang Yongqin, et al. Microstructure and mechanical properties in friction stir welded nanostructured oxide dispersion strengthened steel joint[J]. Transactions of the China Welding Institution, 2015, 36(10): 9 − 11
    Murty K L, Charit I. Structural materials for Gen-IV nuclear reactors: challenges and opportunities[J]. Journal of Nuclear Materials, 2008, 383(1): 189 − 195.
    Masuyama F. Creep degradation in welds of Mod. 9Cr-1Mo steel[J]. International Journal of Pressure Vessels and Piping, 2006, 83(11): 819 − 825.
    伍光凤, 刘 洪, 马志飞. 提高P91耐热钢焊接接头冲击韧度的研究[J]. 热加工工艺, 2007, 36(11): 30 − 32
    Mishra R S, Ma Z Y. Friction stir welding and processing[J]. Materials Science and Engineering: R: Reports, 2005, 50(1): 1 − 78.
    Han W T, Wan F R, Leng B, et al. Grain characteristic and texture evolution in friction stir welds of nanostructured oxide dispersion strengthened ferritic steel[J]. Science and Technology of Welding and Joining, 2011, 16(8): 690 − 696.
    张 静, 韩文妥, 常永勤, 等. ODS钢搅拌摩擦焊接头的微观组织及其高温力学性能[J]. 焊接学报, 2015, 36(10): 9 − 11
    Du D, Fu R, Li Y, et al. Gradient characteristics and strength matching in friction stir welded joints of Fe-18Cr-16Mn-2Mo-0.85N austenitic stainless stee[J]. Materials Science and Engineering: A, 2016, 616: 246 − 251.
    Wang D, Ni D R, Xiao B L, et al. Microstructural evolution and mechanical properties of friction stir welded joint of Fe-Cr-Mn-Mo-N austenite stainless steel[J]. Materials & Design, 2014, 64: 355 − 359.
    Xie G M, Cui H B, Luo Z A, et al. Asymmetric distribution of microstructure and impact toughness in stir zone during friction stir processed a high strength pipeline steel[J]. Materials Science and Engineering: A, 2017, 704: 401 − 411.
    Yano Y, Sato Y S, Sekio Y, et al. Mechanical properties of friction stir welded 11Cr-ferritic/martensitic steel[J]. Journal of Nuclear Materials, 2013, 442(1): S524 − S528.
    Manugula V L, Rajulapati K V, Reddy G M, et al. A critical assessment of the microstructure and mechanical properties of friction stir welded reduced activation ferritic-martensitic steel[J]. Materials & Design, 2016, 92: 200 − 212.
    Noh S, Ando M, Tanigawa H, et al. Friction stir welding of F82H steel for fusion applications[J]. Journal of Nuclear Materials, 2016, 478: 1 − 6.
    Arbegast W J. Modeling friction stir joining as a metal working process[C]//San Diego, USA: Hot Deformation of Aluminum Alloys Ⅲ, 2003: 313–317.
    • Related Articles

  • Related Articles

    [1]LUO Jingyue, LI Xiaobo, LIU Xiaochao, SHI Lei, SHEN Zhikang, PEI Xianjun, NI Zhonghua. Effect of tool rotation speed on microstructure and mechanical properties of Al/steel vortex flow-based friction stir lap welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2025, 46(2): 127-135. DOI: 10.12073/j.hjxb.20240906002
    [2]ZHAO Pengfei, WANG Xuhao, GUO Yang, WANG Ting, ZHANG Yusheng, XU Jian, MAO Guijun. Effect of welding speed on microstructure and mechanical properties of electron beam welded joints of 12Cr heat-resistant steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2024, 45(12): 55-62. DOI: 10.12073/j.hjxb.20240507004
    [3]ZHANG Chao, ZHOU Mengbing, CUI Lei, TAO Xin, WANG Jun, WANG Wei, LIU Yongchang. Microstructure and impact properties for friction stir welds of 9Cr-1.5W-0.15Ta heat resistant steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2024, 45(4): 36-42. DOI: 10.12073/j.hjxb.20230423002
    [4]ZHANG Chao, CUI Lei, ZHANG Hengquan, WANG Jing, ZHANG Ran, HOU Ailin. Properties for the electron beam welds and friction stir welds of 9Cr-1.5W-0.15Ta heat resistant steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2020, 41(11): 13-17. DOI: 10.12073/j.hjxb.20200401003
    [5]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
    [6]JIA Zhongxue, ZHAO Yunqiang, DONG Chunlin, WANG Chungui, CHEN Hexing. Microstructure and mechanical properties of 2205 duplex stainless steel friction stir welding joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(3): 97-101. DOI: 10.12073/j.hjxb.2019400079
    [7]ZHOU Li, ZHANG Renxiao, SHU Fengyuan, HUANG Yongxian, FENG Jicai. Microstructure and mechanical properties of friction stir welded joint of Q235 steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(3): 80-84. DOI: 10.12073/j.hjxb.2019400076
    [8]WANG Hongduo, WANG Wen, LI Xiao, WANG Kuaishe. Microstructure and mechanical properties of friction stir processed hypoeutectoid steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2018, 39(10): 41-47. DOI: 10.12073/j.hjxb.2018390246
    [9]ZHANG Jing, HAN Wentuo, CHANG Yongqin, WAN Farong. Microstructure and mechanical properties in friction stir welded nanostructured oxide dispersion strengthened steel joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2015, 36(10): 9-11,40.
    [10]XU Yong-gang, LI Ning, CAI Guang-jun, Wang Yi-rong. Effect of Chromium,Niobium and Vanadium Contents on 9Cr-1Mo Tempered Weld Metal Microstructure and Tensile Properties[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2002, (5): 49-52.

Catalog

    Get Citation
    PDF
    XML
    Article views (150) PDF downloads (11) 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