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| Citation: |
KANG Tianyou, SUN Lei, WANG Xinghua, ZHANG Yuxiang, WANG Renfu, ZHANG Youjing. Strengthing and toughening mechanism of weld metal of 690 MPa grade high strength steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION. DOI: 10.12073/j.hjxb.20240108001
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Two different types of weld metals with yield strength of 690 MPa were prepared. The microstructure analysis and mechanical properties test were carried out and the mechanism of strengthen-tougheness was revealed. The results showed that the nickel equivalent ( Nieq ) of the traditional 690 MPa grade weld metal was small, and the segregation of alloy elements in the interdendritic region could be negligible. he weld metal formed a relatively uniform structure dominated by coarse granular bainite (GB). Because the coarse GB had little resistance to crack propagation, its low temperature toughness was poor. A new type of 690MPa grade weld metal was prepared by increasing Nieq. Due to the significant segregation of Mn and Ni in the inter-dendritic region, the stability of undercooled austenite in the interdendritic region was greater than that in the dendrite region, therefore the weld metal formed a complex phase structure with acicular ferrite (AF) in the dendrite and lath martensite (LM) in the interdendritic region. In this composite structure, AF was the main toughening phase and LM was the main strengthening phase. The yield strength of the weld metal was 738 MPa, and the impact absorption energy at −50 ℃ was 122 J, which achieved a good matching of strength and toughness.
| [1] |
JOYDEEP R, PRITAM D. Effect of B2O3 enrichment on microstructural inhomogeneity of high strength steel weldments[J]. China Welding, 2024, 33(3): 25 − 32.
|
| [2] |
WANG X L, SU W J, XIE Z J, et al. Microstructure evolution of heat-affected zone in submerged arc welding and laser hybrid welding of 690MPa high strength steel and its relationship with ductile–brittle transition temperature[J]. Acta Metallurgica Sinica (English Letters), 2023, 36(4): 623 − 636. doi: 10.1007/s40195-022-01498-0
|
| [3] |
DAMIR A, CHU D, BRIAN B. Response and strength of intermediately stiffened cold-formed Steel lipped channel columns formed from 100 ksi(690MPa) Steel[C]//Annual Stability Conference Structural Stability Research CouncilApril 11-14, 2023, Charlotte, North Carolina. Chicago: AISC, 2023.
|
| [4] |
孟满丁, 魏金山, 安同邦, 等. Si元素对800 MPa级HSLA钢焊材熔敷金属组织及韧性的影响[J]. 焊接学报, 2024, 45(4): 93 − 100. doi: 10.12073/j.hjxb.20230425002
MENG Manding, WEI Jinshan, AN Tongbang, et al. Effects of Si content on microstructure and toughness of the 800 MPa grade high-strength low-alloy deposited metals[J]. Transactions of the China Welding Institution, 2024, 45(4): 93 − 100. doi: 10.12073/j.hjxb.20230425002
|
| [5] |
王伟, 何亮, 何磊. 船用高强钢焊接材料合金系研究现状[J]. 材料开发与应用, 2020, 35(6): 79 − 83.
WANG Wei, HE Liang, HE Lei. Review on welding material alloy systems of high strength steels for ships[J]. Development and Application of materials, 2020, 35(6): 79 − 83.
|
| [6] |
汤忖江, 安同邦, 彭云, 等. 焊接热输入对690MPa级HSLA钢焊缝金属组织与力学性能的影响[J]. 焊接学报, 2024, 45(9): 110 − 119. doi: 10.12073/j.hjxb.20230501001
TANG Cunjiang, AN Tongbang, PENG Yun, et al. Effect of heat input on microstructure and mechanical properties of weld metal of 690 MPa grade HSLA steel[J]. Transactions of the China Welding Institution, 2024, 45(9): 110 − 119. doi: 10.12073/j.hjxb.20230501001
|
| [7] |
QIU R P, FENG X. Effect of aluminium element on microstructure and properties of weld metal of 960MPa steel[J]. China Welding, 2020, 29(4): 48 − 53.
|
| [8] |
毛高军. Ni对低碳贝氏体焊缝金属组织和强韧性的影响及相变机理研究[D]. 兰州: 兰州理工大学, 2018.
MAO Gaojun. Effect of nickel on microstructure evolution and strength-toughnessproperty development and bainite transformation mechanism in low-carbon bainitic weld metals[D]. Lanzhou: Lanzhou University of Technology, 2018.
|
| [9] |
ZHOU Y L, JIA T, ZHANG X J, et al. Microstructure and toughness of the CGHAZ of an offshore platform steel[J]. Journal of Materials Processing Technology, 2015, 219: 314 − 320. doi: 10.1016/j.jmatprotec.2014.12.017
|
| [10] |
LAN L Y, QIU C L, ZHAO D W, et al. Microstructural characteristics and toughness of the simulated coarse grained heat affected zone of high strength low carbon bainitic steel[J]. Materials Science & Engineering A, 2011, 529: 192 − 200.
|
| [11] |
LEPERA F S. Improved etching technique to emphasize martensite and bainite in high-strength dual-phase steel[J]. Journal of Metals, 1980, 32(3): 38 − 39.
|
| [12] |
DE A K, SPEER J G, MATLOCK D K. Color tint-teching for multiphase steels[J]. Advanced Material & Processes, 2003, 161(2): 27 − 30.
|
| [13] |
YU C Y, LIU Q, CAI Z P, et al. Effect of solidification segregation on microstructure and mechanical properties of a Ni-Cr-Mo-V steel weld metal[J]. Metallurgical and Materials Transactions A, 2022, 53(4): 1394 − 1406. doi: 10.1007/s11661-022-06600-w
|
| [14] |
SUN J, LU S P. Influence of inter-dendritic segregation on the precipitation behaviour and mechanical properties in a vanadium-containing Fe-Cr-Ni-Mo weld metal[J]. Scripta Materialia, 2020, 186: 174 − 179. doi: 10.1016/j.scriptamat.2020.05.021
|
| [15] |
孙健. Fe-Cr-Ni-Mo系熔敷金属组织与性能研究[D]. 合肥: 中国科学技术大学, 2020.
SUN Jian. Research on microstructure and properties of Fe-Cr-Ni-Mo deposited Metal[D]. Heifei: University of Science and Technology, 2020.
|
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