锆处理对低合金钢大线能量焊接粗晶区组织与性能的影响
罗小兵
钢铁研究总院
Effect of Zirconium Treatment on CGHAZ Microstructure and Properties of Large Heat Input Welding to Low Alloy Steels
摘要 本文采用焊接热模拟和热力学计算相结合的方法,研究了Zr处理对低合金高强船体钢大线能量焊接粗晶区组织与性能的影响。结果表明,Zr处理钢对钢中形成的氧化物类型、粒度及分布存在显著影响。当钢中Zr含量低于85ppm时,钢中形成复合的Zr-Ti-O氧化物颗粒。其中Zr含量为45ppm时,钢中形成等量的Ti、Zr氧化物,此时氧化物颗粒最为细小,微量Zr对含Ti氧化物颗粒的细化作用最为明显。Zr含量大于85ppm时,钢中只形成单一的ZrO2颗粒。复合Zr-Ti氧化物在低合金高强船体钢大线能量焊接时具有促进晶内针状铁素体的能力,显著的提高钢大线能量焊接粗晶区的低温韧性。
Abstract :Effect of Zirconium addition on CGHAZ microstructure and properties of large heat input welding low alloy steels were studied based on welding thermal simulation and thermodynamic calculations. The results showed that Zr treatment exhibited great effect on the variety, size and distribution of oxide formed in the steel. Zr-Ti-O composite oxide formed in the steel when zirconium content lower than 85ppm. Equivalent amounts of Ti-O and Zr-O oxide formed while zirconium content equal to 45ppm, and the size of oxide was the finest in this present condition. Meanwhile, it indicated that the refinement effect of zirconium treatment on the Ti-bearing oxides was obviously. On the other hand, when zirconium content was larger than 85ppm, only ZrO2 inclusions formed in the steel. Zr-Ti-O composite oxide could promote the formation of acicular ferrite transformation, which improved the impact toughness of CGHAZ of large heat input welding in high strength ship hull steels.
收稿日期: 2010-05-14
出版日期: 2011-04-15
[1]
Jun Zhao, Hai-bin Zuo, Chao Ling, Wen-tao Guo, Jing-song Wang, Qing-guo Xue. Microstructure evolution of coke under CO2 and H2 O atmospheres [J]. 钢铁研究学报(英文版), 2020, 27(7): 743-754.
[2]
Sheng-li Wu, Xiao-bo Zhai, Li-xin Su, Xu-dong Ma. Ore-blending optimization for Canadian iron concentrate during iron ore sintering based on high-temperature characteristics of fines and nuclei [J]. 钢铁研究学报(英文版), 2020, 27(7): 755-769.
[3]
Feng Zhang, De-qing Zhu, Jian Pan, Zheng-qi Guo, Meng-jie Xu. Improving roasting performance and consolidation of pellets made of ultrafine and super high grade magnetite concentrates by modifying basicity [J]. 钢铁研究学报(英文版), 2020, 27(7): 770-781.
[4]
Da‑peng Li, Hua‑zhang Wu, Hai‑feng Wang, Hong Li. Growth of solidified shell in bloom continuous casting mold of hypo-peritectic steel based on a FeS tracer method [J]. 钢铁研究学报(英文版), 2020, 27(7): 782-787.
[5]
Jie Yang, Deng‑fu Chen, Miao‑yong Zhu. Crystallization and heat transfer of CaO–SiO2 -based slag for high-Mn–high-Al steel [J]. 钢铁研究学报(英文版), 2020, 27(7): 788-795.
[6]
Ping‑guo Jiang, Jin‑sheng Liu, Yi‑yu Xiao, Xiao‑heng Tan, Wen‑jie Liu. Recovery of iron from copper slag via modified roasting in CO–CO2 mixed gas and magnetic separation [J]. 钢铁研究学报(英文版), 2020, 27(7): 796-806.
[7]
Hai Wang, Dong Liu, Jian‑guo Wang, Hai‑ping Wang, Yang Hu, Hao‑dong Rao. Characterization of hot deformation behavior of 30Si2MnCrMoVE low-alloying ultra-high-strength steel by constitutive equations and processing maps [J]. 钢铁研究学报(英文版), 2020, 27(7): 807-819.
[8]
Chen Dong, Zheng‑dong Liu, Zheng‑zong Chen, Zhen Liu, Jia‑zhuang Zheng, Xi‑tao Wang. Hot deformation behavior of a heat-resistant alloy without γ′-phase [J]. 钢铁研究学报(英文版), 2020, 27(7): 820-833.
[9]
Jia‑jia Qiu, Min Zhang, Gu‑hui Gao, Zhun‑li Tan, Bing‑zhe Bai. Research and modeling on correlation among microstructure, yield strength and process of bainite/martensite steel [J]. 钢铁研究学报(英文版), 2020, 27(7): 834-841.
[10]
Xiao‑hui Chen, Bo Chen, Xu Cheng, Guo‑chao Li, Zheng Huang. Microstructure and properties of hybrid additive manufacturing 316L component by directed energy deposition and laser remelting [J]. 钢铁研究学报(英文版), 2020, 27(7): 842-848.
[11]
Huan Lin, Mao‑sheng Yang, Bai‑po Shu. Fretting wear behaviour of high-nitrogen stainless bearing steel under lubrication condition [J]. 钢铁研究学报(英文版), 2020, 27(7): 849-866.
[12]
Rui‑wu Li, Zheng Zhang, Jian‑wei Li, Ke‑xin Ma, Yuan‑yuan Guo, Yan‑wen Zhou, Fa‑yu Wu. Surface modification of 316L stainless steel by diamond-like carbon films [J]. 钢铁研究学报(英文版), 2020, 27(7): 867-874.
[13]
He‑ping Li, Sheng‑li Wu, Zhi‑bin Hong, Heng Zhou, Ming‑yin Kou. Development and application of coke oven gas spraying on sinter bed [J]. 钢铁研究学报(英文版), 2020, 27(6): 617-623.
[14]
Xin Jiang, Huai‑yu Zhang, Hai‑yan Zheng, Qiang‑jian Gao, Feng‑man Shen. Three-segment control theory of MgO/Al2 O3 ratio based on viscosity experiments and phase diagram analyses at 1500 °C [J]. 钢铁研究学报(英文版), 2020, 27(6): 624-630.
[15]
Qing‑song Zhang, Yi Min, Jiu‑jian Xu, Cheng‑jun Liu. Formation and evolution behavior of inclusions in Al-killed resulfurized free-cutting steel with magnesium treatment [J]. 钢铁研究学报(英文版), 2020, 27(6): 631-642.