低碳齿轮钢18CrNiMo7-6奥氏体晶粒度长大规律

doi:10.11896/cldb.20020030

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Abstract The austenite grain growth behavior of low carbon gear steel 18CrNiMo7-6 under different heating conditions was studied by metallographic technique, and an Arrhenius growth model for the average austenite grain size was established,then was optimized by using time exponent. The results showed that the average austenite grain size gradually increased with the temperature and time increasing from 1 173 K to 1 373 K, and the sensitivity to temperature was higher than that to time,and the apparent coarsening temperature was 1 273 K. The classical Arrhenius growth model for austenite grain size was established: D=2.223×10⁶exp[-132 086/(RT)]tⁿ, with the activation energy Q=132.086 kJ/mol. The time exponent n approximately coincided the S-type function with the change of temperature, and the relevant mathematical equation was established: n=0.077 5+0.231 7/(1+10^{(1 326.73-T)×0.023 5}),which was used to optimize the time exponent in the Arrhenius equation considering alloy-element. The calculated value of average austenite grain size was compared with the measured value after optimization, and the results show that the consistency of the model was better than that of the unoptimized model.

Key words： gear steel austenite grain growth growth model austenitizing temperature time exponent

Published: 10 May 2021

CLC number:

TG142.1

Fund:Industrial Strong Foundation Engineering (Tender No.: TC180A3Y1/Subcontract No.: 14).

About author:: Shaopeng Yang studied in Kunming University of Science and Technology in September 2015, and co-educated and learned in Iron and Steel Research Institute from 2016 to 2017, then he received his M.S. degrees in 2017.Now he is studying at Research Institute of Iron and Steel, receiving doctor's degree. He is mainly engaged in the research on the structure and properties of alloy structural steel.
Maoqiu Wang, professor-level senior engineer, docto-ral supervisor. Engaged in research and development of alloy structural steel for a long time, responsible for 15 national research projects, published more than 150 academic papers, won 15 national invention patents, supervised more than 20 graduate students. He is the main draftsman of national standard of gear steel (GB/T5216) and national military standard. He has high academic achievements in the mechanism of delayed fracture and fatigue failure of high strength steel: the role of local hydrogen concentration and local stress in the process of delayed fracture of high strength steel was explained for the first time in the world; the influence of microstructure on the fatigue performance of gear steel was studied and the fatigue fracture mechanism of micro-alloyed carburized gear steel was revealed. He is a reviewer of Metall. Mater. Trans. A and Mater. Sci. Eng. A, Acta Metallurgica Sinicaand other well-known academic journals, as well as a technical expert of ISO16573 international standard.

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	YANG Shaopeng
	YU Wenchao
	HU Fangzhong
	WANG Maoqiu
	WANG Kaizhong
	WANG Zimin
	SHI Jie

Cite this article:

YANG Shaopeng,YU Wenchao,HU Fangzhong, et al. The Austenite Grain Growth Behavior of Low Carbon Gear Steel 18CrNiMo7-6[J]. Materials Reports, 2021, 35(8): 8179-8183.

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http://www.mater-rep.com/EN/10.11896/cldb.20020030 OR http://www.mater-rep.com/EN/Y2021/V35/I8/8179

1 Fernández J, Illescas S, Guilemany J M. Materials Letters,2007,61(11),2389.
2 Uhm S, Moon J, Lee C, et al. ISIJ International,2004,44(7),1230.
3 Li Z Q, Wen Z, Su F Y, et al. Journal of Materials Research,2016,31(14),2105.
4 Wang M, Cheng X C, Cheng S H, et al. Transactions of Materials and Heat Treatment,2016,37(4),243(in Chinese).
王猛,王晓晨,程四华,等.材料热处理学报,2016,37(4),243.
5 Maalekian M, Radis R, Militzer M, et al. Acta Materialia,2012,60(3),1015.
6 Annan K A, Siyasiya C Witness, Stumpf W E. ISIJ International,2018,58(2),333.
7 Fang W, Zhang C, Gou F, et al. Material Science & Engineering Technology,2020,51(2),230.
8 Luo X, Kang Y, Yang C, et al. In: The 7th International Conference on High Strength Low Alloy Steels. Hangzhou,2015,pp.297.
9 Priadi D, Napitupulu R A M, Siradj E S. Journal of Mining and Metallurgy, Section B: Metallurgy,2011,47(2),199.
10 Wu D, Wang F, Cheng J, et al. High Temperature Materials and Processes,2018,37(9-10),899.
11 Yang Q, Zhang L W, Zhang C, et al. Heat Treatment of Metals,2019,44(4),1(in Chinese).
杨清,张立文,张驰,等.金属热处理,2019,44(4),1.
12 Liu Z Y, Bao Y P, Wang M, et al. International Journal of Minerals, Metallurgy, and Materials,2019,26(3),282.
13 Chen R C, Li J J, Zheng Z Z, et al. Procedia Engineering,2017,207,663.
14 Lee S J. ISIJ International,2013,53(10),1902.
15 Illescas S, Fernández J, Guilemany J M. Materials Letters,2008,62(20),3478.
16 Gleiter H. Acta Metallurgica,1969,17(5),565.
17 Jacot A, Rappaz M. Acta Materialia,1999,47(5),1645.
18 Miyoshi E, Takaki T. Computational Materials Science,2016,112,44.
19 Simpson C J, Aust K T, Winegard W C. Metallurgical Transactions,1971,2(4),987.
20 Lee S J, Lee Y K. Materials & Design,2008,29(9),1840.
21 Lee S J, Matlock D K, Van T C J. Scripta Materialia,2011,64(9),805.
22 Zaccone M, Krauss G. Metallurgical Transactions A,1993,24(10),2263.
23 Jiao S, Penning J, Leysen F, et al. Steel research,2000,71(9),345.