Effect of post-weld tempering temperature on microstructure and room temperature mechanical properties of G115 steel deposited metal

doi:10.13251/j.issn.0254-6051.2021.10.035

Abstract

Abstract: G115 steel filler rod was welded on a steel test plate, and then the post-weld tempering for the plate was carried out at 760, 780, 800 and 820 ℃, respectively. The mechanical properties and microstructure of the weld-deposited steel plate under different tempering temperatures were analyzed. The results show that the best tempering temperature of the G115 steel deposited on the plate is 800 ℃. With the increases of the tempering temperature, the precipitation phase M₂₃C₆ has a growing-up trend. The impact fracture of the steel plate tempered at 760-820 ℃ is characterized by dimple fracture and quasi-cleavage fracture. Spherical second phase particles are observed in the dimples which formed during the deoxidation reaction in welding metallurgy process.

Key words: G115 steel, deposited metal, tempering, martensite, mechanical properties, microstructure

CLC Number:

TG142.73

Qi Xiangqian. Effect of post-weld tempering temperature on microstructure and room temperature mechanical properties of G115 steel deposited metal[J]. Heat Treatment of Metals, 2021, 46(10): 199-203.

References

[1]Peng Y, Liu Z. Toughness evolution of 9Cr-3W-3Co martensitic heat resistant steel during long time aging[J]. Materials Science and Engineering A, 2016, 650: 290-294.
[2]Bo X, Xu L, Lei Z, et al. Microstructure evolution and fracture mechanism of a novel 9Cr tempered martensite ferritic steel during short-term creep[J]. Materials Science and Engineering A, 2017, 707: 466-477.
[3]马煜林, 张莉萍, 刘越, 等. w(Co)对CB2钢显微组织和力学性能的影响[J]. 东北大学学报(自然科学版), 2018, 39(11): 81-86.
Ma Yulin, Zhang Liping, Liu Yue, et al. Effect of Co content on microstructure and mechanical properties of CB2 steel[J]. Journal of Northeastern University(Natural Science), 2018, 39(11): 81-86.
[4]李海昭, 梁军, 林万鹏, 等. 正火温度对G115钢组织及室温强度的影响[J]. 材料热处理学报, 2018, 39(1): 71-76.
Li Haizhao, Liang Jun, Lin Wanpeng, et al. Effect of normalizing temperature on microstructure and room temperature strength of G115 steel[J]. Transactions of Materials and Heat Treatment, 2018, 39(1): 71-76.
[5]Peng Y, Liu Z, Bao H, et al. Effect of microstructural evolution on high-temperature strength of 9Cr-3W-3Co martensitic heat resistant steel under different aging conditions[J]. Materials Science and Engineering A, 2013, 588: 22-28.
[6]Bo X, Xu L, Lei Z, et al. Creep properties, creep deformation behavior, and microstructural evolution of 9Cr-3W-3Co-1CuVNbB martensite ferritic steel[J]. Materials Science and Engineering A, 2017, 711: 434-447.
[7]The American Society of Mechanical Engineers. ASME Boiler and Pressure Vessel Code, Section Ⅱ: Materials, Part C: Specifications for Welding Rods, Electrodes, and Filler Metals[S]. New York, 2017.
[8]Pandey C, Mahapatra M M, Kumar P, et al. Microstructure characterization and charpy toughness of P91 weldment for as-welded, post-weld heat treatment and normalizing & tempering heat treatment[J]. Metals and Materials International, 2017, 23(5): 900-914.
[9]Korcakova L, Hald J, Somers M. Quantification of Laves phase particle size in 9CrW steel[J]. Materials Characterization, 2001, 47(2): 111-117.
[10]Matsunaga T, Hongo H, Tabuchi M, et al. Suppression of grain refinement in heat-affected zone of 9Cr-3W-3Co-VNb steels[J]. Materials Science and Engineering A, 2016, 655: 168-174.
[11]徐忠峰, 王淦刚, 鲁立, 等. 焊后热处理对P92钢焊接接头显微组织和力学性能的影响[J]. 金属热处理, 2019, 44(1): 148-151.
Xu Zhongfeng, Wang Gangang, Lu Li, et al. Effect of post-weld heat treatment on microstructure and mechanical properties of P92 steel welded joint[J]. Heat Treatment of Metals, 2019, 44(1): 148-151.
[12]杨丽霞, 马龙腾, 陈正宗, 等. 回火温度对9Cr-3W-3Co马氏体钢组织和硬度的影响[J]. 金属热处理, 2018, 43(6): 153-158.
Yang Lixia, Ma Longteng, Chen Zhengzong, et al. Effect of tempering temperature on microstructure and hardness of 9Cr-3W-3Co martensitic steel[J]. Heat Treatment of Metals, 2018, 43(6): 153-158.
[13]Pandey C, Mahapatra M M, Kumar P, et al. Some studies on P91 steel and their weldments[J]. Journal of Alloys and Compounds, 2018, 743: 332-364.
[14]Wu Z, Zhang X, Song X, et al. Microstructure and properties of welded joint for T92 ferritic heat resistant steel[J]. Journal of Alloys and Compounds, 2017: 140523.

[1]	Wang Yudai, Liu Yang, Zhu Yanyan, Tian Xiangjun, Cheng Xu, Ran Xianzhe, Qian Tingting. Effect of heat treatment on microstructure homogeneity and tensile properties of hybrid fabricated AerMet100 ultra-high strength steel [J]. Heat Treatment of Metals, 2022, 47(4): 1-9.
[2]	Zhang Ziyan, Chen Jun, Chen Xiaoya, Li Quan'an, Liu Jianxin. Effect of solution and aging treatment on microstructure and corrosion resistance of Mg-4Sm-3Gd-0.5Zr alloy [J]. Heat Treatment of Metals, 2022, 47(4): 10-16.
[3]	Liang Enpu, Xu Le, Yang Yong, Wang Maoqiu. Effects of Al and Cu additions on microstructure and mechanical properties of 40CrNi3MoV steel [J]. Heat Treatment of Metals, 2022, 47(4): 17-23.
[4]	Qi Xiaoliang, Li Yan, Ding Wei, Zhao Zengwu. Effect of original microstructure of medium manganese TRIP steel containing Al on microstructure and mechanical properties after intercritical annealing [J]. Heat Treatment of Metals, 2022, 47(4): 24-29.
[5]	Chen Baoan, Zhang Jingyuan, Zhu Zhixiang, Han Yu, Pan Xuedong, Zhang Lei, Chen Suhong. Effect of chemical composition on microstructure and properties of high strength Al-Mg-Si alloy [J]. Heat Treatment of Metals, 2022, 47(4): 30-38.
[6]	Chen Dongjun, Li Guangyang, Liu Gang. Effect of aging treatment on microstructure and mechanical properties of AlSi9Cu3 HPDC aluminum alloy [J]. Heat Treatment of Metals, 2022, 47(4): 53-56.
[7]	Chen Liansheng, Zhang Luyou, Tian Yaqiang, Yang Zixuan, Li Hongbin, Pan Hongbo, Wei Yingli. CCT curves and microstructure and properties of low-carbon high strength marine steel [J]. Heat Treatment of Metals, 2022, 47(4): 63-68.
[8]	Jia Changyuan, Huo Yuanming, He Tao, Huo Cunlong, Liu Keran. High temperature tensile deformation behavior and microstructure evolution law of 40CrNiMo steel [J]. Heat Treatment of Metals, 2022, 47(4): 69-74.
[9]	Wang Yunlong, Yu Wei, Zhang Yi, Shi Jiaxin, Li Minghui. Effect of austenitizing temperature on isothermal transformation and mechanical properties of bainite steel [J]. Heat Treatment of Metals, 2022, 47(4): 80-85.
[10]	Liu Liyan, Bi Wenzhen, Wei Xicheng. Effect of Mn element on microstructure evolution of galvanized coating of hot stamping steel [J]. Heat Treatment of Metals, 2022, 47(4): 93-99.
[11]	Luo Zaibin, Fan Zize, Peng Zhen. Research progress of light-weight high-entropy alloys [J]. Heat Treatment of Metals, 2022, 47(4): 100-107.
[12]	Fu Xibin, Chen Zihao, Zhang Ke, Zhao Shiyu, Sun Xinjun, Zhu Zhenghai, Liang Xiaokai, Yong Qilong. Effect of quenching temperature on microstructure and mechanical properties of high Ti low alloy wear-resistant steel [J]. Heat Treatment of Metals, 2022, 47(4): 122-127.
[13]	Su Pengji, Ma Yonglin, Dong Lili, Yang Xuefeng. Effect of magnetic field pre-annealing on microstructure and texture of CGO steel [J]. Heat Treatment of Metals, 2022, 47(4): 128-132.
[14]	Li Li, Zeng Yan, Wu Xiaochun. Heat treatment process optimization for 4Cr5Mo2VCo steel [J]. Heat Treatment of Metals, 2022, 47(4): 133-140.
[15]	Lü Jiesheng, Song Zhigang, He Jianguo, Feng Han, Zheng Wenjie, Zhu Yuliang. Microstructure transformation and strengthening-plasticization mechanism of S32205 duplex stainless steel after cold rolling and annealing [J]. Heat Treatment of Metals, 2022, 47(4): 141-145.