热处理工艺对铝硅镀层热成形钢组织性能的影响

doi:10.13228/j.boyuan.issn1006-9356.20220101

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摘要为深入理解不同热处理工艺参数对铝硅镀层热成形钢组织性能的影响规律,主要研究了加热温度和保温时间对铝硅镀层热成形钢的硬度、微观组织、镀层厚度和镀层成分的影响。结果表明,当加热温度不大于 900 ℃ 时,铝硅镀层热成形钢的硬度随着保温时间的增加而增加;当加热温度大于 900 ℃ 时,铝硅镀层热成形钢的硬度随着保温时间的增加而下降。当加热温度为850~930 ℃,保温时间为 4、8 min 时铝硅镀层热成形钢的微观组织在模具淬火冷却过程中均转化成为马氏体。在相同加热温度下,铝硅镀层热成形钢合金层的厚度随着保温时间的增加而增大,当加热温度升高至 930 ℃ 时,镀层因氧化而挥发严重,导致镀层变薄,所以铝硅镀层热成形钢的加热温度应控制在 930 ℃ 以下。保温温度升高、保温时间增加导致元素扩散显著,聚集的硅元素含量和面积由于其不断向四周扩散而降低。同时铁元素大量扩散到镀层中,镀层中铁元素含量增加显著。高温下,镀层发生明显的氧化反应,氧化反应促进了微孔洞的形核和长大。

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	马闻宇
	李学涛
	郑学斌
	郝玉林
	徐德超
	潘跃

关键词 ：热处理, 铝硅镀层热成形钢, 微观组织, 镀层厚度, 微孔洞

Abstract：In order to study the effect of heat treatment process parameters on the microstructure and property of Al-Si coated hot forming steel, the effect of heating temperature and soaking time on hardness, microstructure, layer thickness and layer content of Al-Si-coated hot forming steel was mainly researched. The results show that when heating temperature is not higher than 900 ℃, the hardness of Al-Si-coated hot forming steel increases with the increase of soaking time. When the heating temperature is higher than 900 ℃, the hardness of Al-Si-coated hot forming steel decreases with the increase of soaking time. When heating temperature is 850-930 ℃, and soaking time are 4 min and 8 min, the microstructure transfers to martensite phase during die quenching process. At a constant heating temperature, the layer thickness of Al-Si-coated hot forming steel increases with the increase of soaking time. When the heating temperature increases to 930 ℃, the coating volatilizes seriously due to oxidation, which makes the layer to be thinner. So, heating temperature of Al-Si-coated hot forming steel should be controlled below 930 ℃. The increase of heating temperature and soaking time enhances the element diffusion, so the concentration of Si element continually diffuses around and decreases the content and area of concentrated Si element. At the same time, Fe element diffuses into coating layer significantly and the content of Fe element increases. The coating oxidizes remarkably at elevated temperature. The oxidation accelerates the nucleation and growth of microvoid.

Key words： heat treatment Al-Si coated hot forming steel microstructure layer thickness microvoid

收稿日期: 2022-02-09

作者简介: 马闻宇(1988—), 男, 博士, 高级工程师; E-mail: wymaustb@163.com

引用本文:

马闻宇, 李学涛, 郑学斌, 郝玉林, 徐德超, 潘跃. 热处理工艺对铝硅镀层热成形钢组织性能的影响[J]. 中国冶金, 2022, 32(5): 109-115. MA Wen-yu, LI Xue-tao, ZHENG Xue-bin, HAO Yu-lin, XU De-chao, PAN Yue. Influence of heat treatment process on microstructure and property of Al-Si coated hot forming steel[J]. China Metallurgy, 2022, 32(5): 109-115.

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http://www.zgyj.ac.cn/CN/10.13228/j.boyuan.issn1006-9356.20220101 或 http://www.zgyj.ac.cn/CN/Y2022/V32/I5/109

[1]	惠亚军, 吴科敏, 黄天华, 等. 500 MPa级V-N微合金化热冲压桥壳用钢的开发[J]. 中国冶金, 2021,31(11):25.
[2]	赵海峰, 徐德超, 张博明, 等. 1 800 MPa级微合金化热冲压钢的弯曲性能[J]. 中国冶金, 2021,31(11):21.
[3]	李绍宏, 何文超, 张旭, 等. H13型热作模具钢表面改性技术研究进展[J]. 钢铁, 2021,56(3):13.
[4]	马闻宇, 杨建炜, 姚野, 等. 热冲压工艺参数对零件成形性影响规律分析[J]. 中国冶金, 2021,31(11):29.
[5]	邓彪, 易红亮, 王国栋. Mo对22MnB5钢板热冲压过程中高温氧化行为的影响[J]. 轧钢, 2020,37(5):6.
[6]	WEI X, CHAI Z, LU Q, et al. Cr-alloyed novel press-hardening steel with superior combination of strength and ductility[J]. Materials Science and Engineering A, 2021, 819:141461.
[7]	HOU Z, MIN J, WANG J, et al. Effect of rapid heating on microstructure and tensile properties of a novel coating-free oxidation-resistant press-hardening steel[J]. JOM, 2021,73(11):3195.
[8]	崔青玲, 李建平, 李世宇, 等. 22MnB5钢锌基镀层加热过程中组织演变及裂纹形成[J]. 钢铁研究学报, 2019,31(2):227.
[9]	Lee C W, Fan D W, Sohn I R, et al. Liquid-metal-induced embrittlement of Zn-coated hot stamping steel[J]. Metallurgical and Materials Transactions A, Physical Metallurgy and Materials Science, 2012,43(13):5122.
[10]	Su X, Tang N, Toguri J M. Thermodynamic evaluation of the Fe-Zn system[J]. Journal of Alloys and Compounds, 2001,325(1):129.
[11]	Ghiotti A, Bruschi S, Sgarabotto F, et al. Tribological performances of Zn-based coating in direct hot stamping[J]. Tribology International, 2014,78:142.
[12]	Kondratiuk J, Kuhn P, Labrenz E, et al. Zinc coatings for hot sheet metal forming: Comparison of phase evolution and microstructure during heat treatment[J]. Surface and Coatings Technology, 2011,205(17):4141.
[13]	李润昌, 张环宇, 张士杰, 等. 1 500 MPa级铝硅镀层热成形钢的试制及质量评价[J]. 轧钢, 2021,38(2):33.
[14]	Dinh K, Hong S, Luu T V, et al. Intermetallic evolution of Al-Si-coated hot stamping steel during modified electrically assisted rapid heating[J]. Acta Metallurgica Sinica(English Letters), 2018,31(12):1327.
[15]	晋家春, 卢茜倩, 邓宗吉. 加热时间对Al-Si涂覆热成形钢镀层的影响[J]. 电子技术, 2020,49(4):74.
[16]	LIANG W K, TAO W, ZHU B, et al. Influence of heating parameters on properties of the Al-Si coating applied to hot stamping[J]. Science China(Technological Sciences), 2017,60(7):1088.
[17]	谢昀映, 成毅, 吴广新. 热处理工艺对22MnB5钢铝硅镀层氧化层厚度和组织演变的影响[J]. 表面技术, 2020,49(4):245.
[18]	Demazel N, Laurent H, Coёr J, et al. Investigation of the progressive hot die stamping of a complex boron steel part using numerical simulations and Gleeble tests[J]. International Journal of Advanced Manufacturing Technology, 2018,99(1/2/3/4):803.