Fe-23Mn-<i>x</i>Al-0.7C低密度钢中非金属夹杂物形成机理

doi:10.13228/j.boyuan.issn0449-749x.20200041

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (7859 KB) HTML (0 KB)
输出: BibTeX | EndNote (RIS)

摘要为了研究Fe-23Mn-xAl-0.7C(x=0.87～6.76)低密度钢中非金属夹杂物形貌特征及形成机理,通过SEM-EDS检测了钢中夹杂物形貌和成分,并借助INCA Feature夹杂物自动分析软件分析了钢中夹杂物尺寸分布、数量密度和面积分数等参数。研究发现,低密度钢中夹杂物尺寸以1～5 μm为主。w([Al])为0.87%时,钢中主要夹杂物为MnS、MnO、Al₂O₃和Al₂O₃-MnS,夹杂物数量较少,但尺寸大于7 μm的夹杂物所占比例较大,平均尺寸为3.45 μm;w([Al])为3.28%时,主要夹杂物为AlN、Al₂O₃、MnS以及AlN-MnS、AlN-Al₂O₃-MnS复合夹杂物,外包裹MnS尺寸较小,小尺寸夹杂物居多,平均尺寸为2.63 μm;w([Al])为6.76%时,钢中夹杂物以AlN或AlN-MnS为主,且AlN夹杂呈聚集状,夹杂物平均尺寸为2.93 μm。此外,通过FactSage 7.3热力学计算讨论了Fe-23Mn-xAl-0.7C低密度钢中夹杂物析出时机及演变过程,为试验结果提供理论解释。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	王伟胜
	朱航宇
	宋明明
	李建立
	韩赟
	薛正良

关键词 ：非金属夹杂物, 低密度钢, Fe-Mn-Al-C, 氮化铝, 硫化锰

Abstract：The morphology and composition of inclusions were observed by SEM-EDS, and particle size distribution, number density, and area ratio of inclusions were analyzed by INCA Feature Analysis System. The results indicate that inclusions with the size from 1 to 5 μm were preponderant. When w([Al]) was 0.87%, there were mainly MnS, MnO, Al₂O₃, and Al₂O₃-MnS complex inclusions with an average size of 3.45 μm. Although the percentage of inclusions over 7 μm was higher, the total number of inclusions was smaller. When w([Al]) was 3.28%, there were mainly AlN, Al₂O₃, MnS, and AlN-MnS, AlN-Al₂O₃-MnS complex inclusions, and the wrapped MnS size was relatively small. There were more small size inclusions in Fe-23Mn-3.28Al-0.7C steel with an average size of 2.63 μm. When w([Al]) was up to 6.76%, the main inclusions were AlN and AlN-MnS with an average size of 2.93 μm, and the morphology of AlN inclusion was agglomeration. Besides, the precipitation behavior and transformation process of inclusions in Fe-23Mn-xAl-0.7C lightweight steels were studied by FactSage 7.3 thermodynamic calculation, and the calculation results provided a theoretical explanation for understanding experimental results.

Key words： non-metallic inclusions lightweight steel Fe-Mn-Al-C aluminium nitride manganese sulfide

收稿日期: 2020-01-29

引用本文:

王伟胜, 朱航宇, 宋明明, 李建立, 韩赟, 薛正良. Fe-23Mn-xAl-0.7C低密度钢中非金属夹杂物形成机理[J]. 钢铁, 2020, 55(10): 29-36. WANG Wei-sheng, ZHU Hang-yu, SONG Ming-ming, LI Jian-li, HAN Yun, XUE Zheng-liang. Formation mechanism of non-metallic inclusions in Fe-23Mn-xAl-0.7C lightweight steels[J]. Iron and Steel, 2020, 55(10): 29-36.

链接本文:

http://www.chinamet.cn/Jweb_gt/CN/10.13228/j.boyuan.issn0449-749x.20200041 或 http://www.chinamet.cn/Jweb_gt/CN/Y2020/V55/I10/29

[1] Kalashnikov I, Shallevich A, Acselrad O, et al. Chemical composition optimization for austenitic steels of the Fe-Mn-Al-C system[J]. Journal of Materials Engineering and Performance, 2000, 9(6): 597.
[2] Sutou Y, Kamiya N, Umino R, et al. High-strength Fe-20Mn-Al-C-based alloys with low density[J]. ISIJ International, 2010, 50(6): 893.
[3] Raabe D, Springer H, Gutierrez-Urrutia I, et al. Alloy design, combinatorial synthesis, and microstructure-property relations for low-density Fe-Mn-Al-C austenitic steels[J]. JOM, 2014, 66(9): 1845.
[4] Frommeyer G, Brüx U. Microstructures and mechanical properties of high-strength Fe-Mn-Al-C light-weight triplex steels[J]. Steel Research International, 2006, 77(9): 627.
[5] Kim S H, Kim H, Kim N J. Brittle intermetallic compound makes ultrastrong low-density steel with large ductility[J]. Nature, 2015, 518(7537): 77.
[6] 曹文全,徐海峰,张明达,等. 新型低密度高强高韧热轧层状钢研发[J]. 钢铁,2016,51(9):1.(CAO Wen-quan, XU Hai-feng, ZHANG Ming-da, et al. Research and development of a new hot rolled laminated structure[J]. Iron and Steel, 2016, 51(9): 1.)
[7] CHANG K M, CHAO C G, LIU T F. Excellent combination of strength and ductility in a Fe-9Al-28Mn-1.8C alloy[J]. Scripta Materialia, 2010, 63(2): 162.
[8] 张志刚, 任英, 成功, 等. 非调质钢中夹杂物生成热力学[J]. 中国冶金, 2020, 30(4): 23.(ZHANG Zhi-gang, REN Ying, CHENG Gong, et al. Thermodynamic of inclusion formation in non-tempered steel[J]. China Metallurgy, 2020, 30(4): 23.)
[9] 王林珠, 李军旗, 杨树峰, 等. 高铝钢中钙处理对非金属夹杂物特征的影响[J]. 钢铁, 2019, 54(11): 27.(WANG Lin-zhu,LI Jun-qi,YANG Shu-feng,et al. Effect of calcium treatment on characteristics of non-metallic inclusions in steel containing high Al[J]. Iron and Steel, 2019, 54(11): 27.)
[10] Gutierrez-Urrutia I, Raabe D. Multistage strain hardening through dislocation substructure and twinning in a high strength and ductile weight-reduced Fe-Mn-Al-C steel[J]. Acta Materialia, 2012, 60(16): 5791.
[11] 牧明,于会香,潘明,等. 精炼渣对高锰钢中非金属夹杂物的影响[J]. 钢铁, 2019, 54(6): 37.(LI Mu-ming,YU Hui-xiang,PAN Ming,et al. Effect of refining slag on non-metallic inclusions in high manganese steel[J]. Iron and Steel, 2019, 54(6): 37.)
[12] Chen S, Rana R, Haldar A, et al. Current state of Fe-Mn-Al-C low density steels[J]. Progress in Materials Science, 2017, 89: 345.
[13] 周彦召,邹长东. 铝镇静特殊钢B类非金属夹杂物原因分析与控制[J]. 中国冶金, 2018, 28(4): 48.(ZHOU Yan-zhao,ZOU Chang-dong. Cause analysis and control of B type non-metallic inclusions of Al killed special steel[J]. China Metallurgy, 2018, 28(4): 48.)
[14] Zambrano O A. A general perspective of Fe-Mn-Al-C steels[J]. Journal of Materials Science, 2018, 53(20): 14003.
[15] Kang S E, Banerjee J R, Mintz B. Influence of S and AlN on hot ductility of high Al TWIP steels[J].Materials Science and Technology, 2012, 28(5): 589.
[16] Tuling A, Mintz B. Crystallographic and morphological aspects of AlN precipitation in high Al TRIP steels[J]. Materials Science and Technology, 2016, 32(6): 568.
[17] Steenken B, Rezende J L L, Senk D. Hot ductility behaviour of high manganese steels with varying aluminium contents[J]. Materials Science and Technology, 2017, 33(5): 567.
[18] Park J H, Kim D J, Min D J. Characterization of nonmetallic inclusions in high-manganese and aluminum-alloyed austenitic steels[J]. Metallurgical and Materials Transactions A, 2012, 43(7): 2316.
[19] Gigacher G, Krieger W, Scheller P R, et al. Non-metallic inclusions in high-Manganese-alloy steels[J]. Steel Research International, 2005, 76(9): 644.
[20] XIN X, YANG J, WANG Y, et al. Effects of Al content on non-metallic inclusion evolution in Fe-16Mn-xAl-0.6C high Mn TWIP steel[J]. Ironmaking and Steelmaking, 2016, 43(3): 234.
[21] 刘洪波,刘建华,沈少波,等. 铝含量对TWIP钢中夹杂物特征及AlN析出行为的影响[J]. 工程科学学报,2017,39(7):1008.(LIU Hong-bo, LIU Jian-hua, SHEN Shao-bo, et al. Influence of Al content on the characteristics of non-metallic inclusions and precipitation behaviors of AlN inclusions in TWIP steel[J]. Chinese Journal of Engineering, 2017, 39(7): 1008.)
[22] Paek M K, Jang J M, Jiang M, et al. Thermodynamics of AlN formation in high manganese-aluminum alloyed liquid steels[J]. ISIJ International, 2013, 53(6): 973.
[23] Jang J M, Paek M K, Pak J J. Thermodynamics of nitrogen solubility and AlN formation in multi-component high Mn steel melts[J]. ISIJ International, 2017, 57(10): 1821.
[24] Liu H, Liu J, Michelic S, et al. Characteristics of AlN inclusions in low carbon Fe-Mn-Si-Al TWIP steel produced by AOD-ESR method[J]. Ironmaking and Steelmaking, 2016, 43(3): 171.
[25] ZHUANG C, LIU J, MI Z, et al. Non-metallic inclusions in TWIP steel[J]. Steel Research International, 2014, 85(10): 1432.