原位观察稀土镧对低合金高强度钢焊接热影响区晶粒细化的影响

doi:10.11901/1005.3093.2020.312

材料研究学报

2021, Vol. 35

Issue (3): 231-240 DOI: 10.11901/1005.3093.2020.312

研究论文

本期目录 | 过刊浏览

原位观察稀土镧对低合金高强度钢焊接热影响区晶粒细化的影响

周峰¹^,², 曹羽鑫³, 万响亮¹^,²^,³(

)

^1.佛山职业技术学院机电工程学院佛山 528237
^2.材谷金带(佛山)金属复合材料有限公司佛山 528000
^3.武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室武汉 430081

In-situ Observation of Effect of La on Grain Refinement in Simulated Coarse-grain Heat-affected Zone of High Strength Low Alloy Steel

ZHOU Feng¹^,², CAO Yuxin³, WAN Xiangliang¹^,²^,³(

)

^1.School of Mechanical and Electrical Engineering, Foshan Polytechnic, Foshan 528237, China
^2.Band (Foshan) Metallic Composite Materials Co. , Ltd. , Foshan 528000, China
^3.Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China

引用本文:

周峰, 曹羽鑫, 万响亮. 原位观察稀土镧对低合金高强度钢焊接热影响区晶粒细化的影响[J]. 材料研究学报, 2021, 35(3): 231-240.
Feng ZHOU, Yuxin CAO, Xiangliang WAN. In-situ Observation of Effect of La on Grain Refinement in Simulated Coarse-grain Heat-affected Zone of High Strength Low Alloy Steel[J]. Chinese Journal of Materials Research, 2021, 35(3): 231-240.

全文: PDF(9778 KB) HTML

摘要:

使用高温激光共聚焦扫描显微镜原位观察了含0.016%(质量分数，下同)的 La和不含La的低合金高强钢模拟焊接热影响区中高温阶段奥氏体的长大和组织转变行为，并使用光学显微镜和电子扫描显微镜对比分析了添加0.016%的La对粗晶热影响区晶粒细化的影响。结果表明：添加0.016%的La使低合金高强钢中的夹杂物由Al-Mg-O、(Mn,Ca)S和TiN复合夹杂物演变为La₂O₂S，这种夹杂物与铁素体的晶格错配度较低，能促进针状铁素体的形成。同时，在添加0.016%La的钢中生成了更多细小弥散的(Ti,Nb)(C,N)析出物，在模拟焊接热循环过程中能钉扎粗晶热影响区奥氏体晶界抑制晶粒长大。这表明，含0.016%La的低合金高强钢中粗晶热影响区的晶粒更为细小。

关键词 ：金属材料, 晶粒细化, 原位观察, 镧, 高强度低合金钢, 粗晶热影响区

Abstract：

The processes of austenite growth and microstructure transformation in the simulated coarse-grain heat-affected zone (CGHAZ) for high strength low alloy steels without and with 0.016% La addition were in-situ observed by means of high temperature laser confocal scanning microscope. The grain refinement in CGHAZ of the steel with 0.016% La was also assessed by using optical- and electron-microscopy. The results show that the complex inclusions of Al-Mg-O, (Mn, Ca)S and TiN may transform to La₂O₂S in CGHAZ of the steel due to the addition of 0.016% La. La₂O₂S had lower mismatch with α-Fe, which can effectively promote the formation of acicular ferrites. Meanwhile, many finer dispersed (Ti, Nb)(C, N) precipitates formed in 0.016% La-containing steel can effectively pin the austenite grain boundary, inhibiting the grain growth. Thus, the grains in CGHAZ of 0.016% La-containing steel became finer.

Key words： metallic materials grain refinement in-situ observation La high strength low alloy steel coarse-grain heat-affected zone

收稿日期: 2020-07-27

ZTFLH:

430-4099

基金资助:广东省自然科学基金(2019A1515011828);广东省教育厅高校创新团队(2019GKCXTD005)

作者简介: 周峰，男，1977年生，副教授

	服务

	把本文推荐给朋友
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	周峰
	曹羽鑫
	万响亮
44.8K

链接本文:

https://www.cjmr.org/CN/10.11901/1005.3093.2020.312 或 https://www.cjmr.org/CN/Y2021/V35/I3/231

表1 不含镧(#1)和含镧(#2)钢中各元素的含量

图1 模拟焊接热循环的示意图

图2 #1钢和#2钢中夹杂物的扫描电镜照片和面扫图

图3 #1钢和#2钢中夹杂物的尺寸分布

表2 实验用钢中粒子的尺寸和密度

图4 #1钢和#2钢中析出物的透视电镜照片和能谱分析

图5 #1钢和#2钢中析出物的尺寸分布

图6 #1钢和#2钢中奥氏体晶粒的长大

图7 #1钢和#2钢的奥氏体在模拟CGHAZ中的HTLCSM图和对应的Adobe Photoshop处理图

表3 实验用钢中奥氏体晶粒的尺寸和针状铁素体的尺寸和数量

图8 模拟焊接热循环中针状铁素体的生成

图9 模拟焊接热循环中贝氏体的生成

图10 #1钢和#2钢的光学组织

图11 #1钢和#2钢在CGHAZ中的取向分布、相邻晶粒间晶界位分布以及有效晶粒尺寸的分布图

表4 实验用钢中晶粒的尺寸

1	Kitagawa Y., Kawasaki H.. Recent development of high strength and tough welding consumables for offshore structures [J]. Kobelco Techn. Rev., 2013, 32: 1
2	Song F M, Li Z G, Qian Y H, et al. Progress in research of structural steels for large heat input welding [J]. Hot Working Technology, 2006, 35(19): 69
2	宋凤明, 李自刚, 钱余海等. 大线能量焊接结构用钢的研究进展 [J]. 热加工工艺, 2006, 35(19): 69
3	Kojima A, Yoshii K, Hada T, et al. Development of high HAZ toughness steel plates for box columns with high heat input welding [J]. Nippon Steel Tech Rep., 2004, 90: 39
4	Liu Y, Wan X L, Li G Q, et al. Grain refinement in coarse-grained heat-affected zone of Al-Ti-Mg complex deoxidised steel [J]. Sci Technol Weld Join., 2019, 24(1): 43
5	Zhou B, Li G Q, Wan X L, et al. In-situ observation of grain refinement in the simulated heat-affected zone of high-strength low-alloy steel by Zr-Ti combined deoxidation [J]. Met. Mater. Int., 2016, 22(2): 267
6	Revah-Moiseev S, Carroad P A. Effect of Al content on the characteristics of inclusions in Al-Ti complex deoxidized steel with calcium treatment [J]. ISIJ Int., 2014, 54(8):1755
7	Shigesato G, Sugiyama M. Development of in-Situ observation technique using scanning ion microscopy and demonstration of Mn depletion effect on intragranular ferrite transformation in low-alloy steel [J]. J. Electron Microscopy, 2002, 51(6): 359
8	Zou X, Sun J, Matsuura H, et al. In situ observation of the nucleation and growth of ferrite laths in the heat-affected zone of EH36-Mg shipbuilding steel subjected to different heat inputs [J]. Metall. Mater. Trans. B, 2018, 49: 2168
9	Liu Y., Li G. Q., Wan X. L., et al. Toughness improvement by Zr addition in the simulated coarse-grained heat-affected zone of high strength low-alloy steels. Ironmak. Steelmak., 2019, 46: 113
10	Yan W, Shan Y Y, Yang K. Effect of TiN inclusions on the impact toughness of low-carbon microalloyed steels [J]. Metall. Mater. Trans. A, 2006, 37(7): 2147
11	Wan X L, Wu K M, Huang G, et al. In situ observation of austenite grain growth behavior in the simulated coarse-grained heat-affected zone of Ti-microalloyed steels [J]. Int. J. Min. Met. Mater., 2014, 21(9): 878
12	Wu Y Q. Study of characteristics of inclusions and property of high heat input welding for oxide metallurgy steel developed by Ca deoxidation [J]. Central South University, 2014
12	吴亦泉. 钙脱氧的氧化物冶金钢中夹杂物及大线能量焊接性能研究 [D]. 湖南: 中南大学, 2014
13	Zhao C L. Research on mechanism of action of rare earth element and process of adding it in molten steel [J]. Angang Technology, 2017, 1: 20
13	赵成林. 稀土元素在钢水中的作用机理及加入技术研究 [J]. 鞍钢技术, 2017, 1: 20
14	Wang L, Lin Q, Ji J, et al. New study concerning development of application of rare earth metals in steels [J]. J. Alloy Compd., 2006, 408-412: 384
15	Song M M, Song B, Xin W B, et al. Effects of rare earth addition on microstructure of C-Mn steel [J]. Ironmak. Steelmak., 2015, 42 (8): 594
16	M PA, Ferry M, Chandra T. Five decades of the Zener equation [J]. ISIJ Int., 1998, 38(9): 913
17	Dere GE, Sharma H, Petrov RH, et al. Effect of niobium and grain boundary density on the fire resistance of Fe-C-Mn steel [J]. Scripta Mater., 2013, 68: 651
18	Burke J, Turnbull D. Recrystallization and grain growth [J]. Process Metal Physics. 1952, 3: 220
19	Mabuchi H, Uemori R, Fujioka M. The role of Mn depletion in intragranular ferrite transformation in the heat affected zone of welded joints with large heat input in structural steels [J]. ISIJ Int. 1996, 36(11): 1406
20	Zhang S, Hattori N, Enomoto M, et al. Ferrite nucleation at ceramic/ austenite interfaces [J]. ISIJ Int. 1996, 36(10): 1301
21	Bramfitt B L. Planar disregistry theory of lattice and its application on heterogeneous nuclei of metal [J]. Met. Trans., 1970, 1:1987

[1]	毛建军, 富童, 潘虎成, 滕常青, 张伟, 谢东升, 吴璐. AlNbMoZrB系难熔高熵合金的Kr离子辐照损伤行为[J]. 材料研究学报, 2023, 37(9): 641-648.
[2]	宋莉芳, 闫佳豪, 张佃康, 薛程, 夏慧芸, 牛艳辉. 碱金属掺杂MIL125的CO₂ 吸附性能[J]. 材料研究学报, 2023, 37(9): 649-654.
[3]	赵政翔, 廖露海, 徐芳泓, 张威, 李静媛. 超级奥氏体不锈钢24Cr-22Ni-7Mo-0.4N的热变形行为及其组织演变[J]. 材料研究学报, 2023, 37(9): 655-667.
[4]	邵鸿媚, 崔勇, 徐文迪, 张伟, 申晓毅, 翟玉春. 空心球形AlOOH的无模板水热制备和吸附性能[J]. 材料研究学报, 2023, 37(9): 675-684.
[5]	幸定琴, 涂坚, 罗森, 周志明. C含量对VCoNi中熵合金微观组织和性能的影响[J]. 材料研究学报, 2023, 37(9): 685-696.
[6]	欧阳康昕, 周达, 杨宇帆, 张磊. 含LPSO相Mg-Y-Er-Ni合金的组织和拉伸性能[J]. 材料研究学报, 2023, 37(9): 697-705.
[7]	徐利君, 郑策, 冯小辉, 黄秋燕, 李应举, 杨院生. 定向再结晶对热轧态Cu71Al18Mn11合金的组织和超弹性性能的影响[J]. 材料研究学报, 2023, 37(8): 571-580.
[8]	熊诗琪, 刘恩泽, 谭政, 宁礼奎, 佟健, 郑志, 李海英. 固溶处理对一种低偏析高温合金组织的影响[J]. 材料研究学报, 2023, 37(8): 603-613.
[9]	刘继浩, 迟宏宵, 武会宾, 马党参, 周健, 徐辉霞. 喷射成形M3高速钢热处理过程中组织的演变和硬度偏低问题[J]. 材料研究学报, 2023, 37(8): 625-632.
[10]	由宝栋, 朱明伟, 杨鹏举, 何杰. 合金相分离制备多孔金属材料的研究进展[J]. 材料研究学报, 2023, 37(8): 561-570.
[11]	任富彦, 欧阳二明. g-C₃N₄ 改性Bi₂O₃ 对盐酸四环素的光催化降解[J]. 材料研究学报, 2023, 37(8): 633-640.
[12]	王昊, 崔君军, 赵明久. 镍基高温合金GH3536带箔材的再结晶与晶粒长大行为[J]. 材料研究学报, 2023, 37(7): 535-542.
[13]	刘明珠, 樊娆, 张萧宇, 马泽元, 梁城洋, 曹颖, 耿仕通, 李玲. SnO₂ 作散射层的光阳极膜厚对量子点染料敏化太阳能电池光电性能的影响[J]. 材料研究学报, 2023, 37(7): 554-560.
[14]	秦鹤勇, 李振团, 赵光普, 张文云, 张晓敏. 固溶温度对GH4742合金力学性能及γ' 相的影响[J]. 材料研究学报, 2023, 37(7): 502-510.
[15]	刘天福, 张滨, 张均锋, 徐强, 宋竹满, 张广平. 缺口应力集中系数对TC4 ELI合金低周疲劳性能的影响[J]. 材料研究学报, 2023, 37(7): 511-522.

Viewed

Full text

Abstract

Cited

Shared

Discussed