冷却速率对中锰马氏体耐磨钢微观结构及硬度的影响

doi:10.11896/cldb.19050036

Abstract
Figure/Table
References
Related Citation (1)

Download:

Full Text ( PDF ) (7048KB)

Suppl. Info.
Export: BibTeX | EndNote (RIS)

Abstract The wear failure often occurs because of the bad service environment of mining machinery components. The single martensite structure of the components made of low alloy wear resistant steel is obtained by quenching and low temperature tempering. Their hardness is high, but the toughness is poor. At present, the martensite and residual austenite (M and RA) multiphase structure of medium manganese wear-resistant steel can be obtained by effectively controlling the process parameters, so as to ensure that the mining mechanical components have a certain hardness and at the same time ensure a certain degree of plastic toughness.
The evolution of microstructure and the volume fraction and morphology of residual austenite and Vickers hardness for medium manganese wear-resistant steel were studied by OM, TEM, EBSD, XRD and Vickers-hardness test. The results showed that only martensite and different volume fraction of residual austenite was obtained with the cooling rate ranging from 30 ℃/s to 0.05 ℃/s. When the cooling rate was 0.05 ℃/s, the carbon partitioning was adequate and 12.01% residual austenite was obtained. The morphology of residual austenite was filmy or obvious blocky. With increasing the cooling rate to 10 ℃/s, less than 6% of residual austenite was retained at room temperature and the residual auste-nite was in the shape of film or small block. In addition, the hardness of the tested steel changed with the cooling rate, because both the microstructure evolution and the residual austenite volume fraction were different at different cooling rate. When the cooling rate was very slow, the carbon solid solution strengthening and martensite dislocation strengthening were weak, and the fraction of residual austenite was high. They minimized the hardness of the tested steel to HV508. The Vickers hardness of the steel was very high when the cooling rate was faster than 10 ℃/s, due to the solid solution strengthening of carbon and dislocation strengthening. The Vickers hardness y of the tested steel and cooling rates x accord with a double exponential decay relationship: y=-42.23exp(-x/4.75)-38.27exp(-x/0.17)+573.76.

Key words： continuous cooling rate residual austenite carbon partitioning Vickers hardness

Published: 26 April 2020

CLC number:

TG142

Fund:This work was financially supported by the National Key Research and Development Program (2017YFB0305100).

Corresponding Authors: Xinli Song, born in 1973, is with doctor degree and now a professor in the Department of Metallic Materials Engineering of the School of Materials and Metallurgy in Wuhan University of Science and Technology. She was a visiting scholar in the University of Toronto, Canada from 2014 to 2015. Her main research fields are microstructure control and strengthening and toughness improvement of high strength iron and steel materials, fatigue and wear failure of materials.

About author:: Jie Deng, born in 1993, graduated from Wuhan University of Science and Technology with a bachelor's degree in metallurgical engineering in 2015. She has been studying for a master's degree in materials science and engineering in Wuhan University of Science and Technology since 2017. Her main research direction is the improvement of the strengthening and toughness and wear performance of steel materials under the Q&P process.

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	DENG Jie
	SUN Xinjun
	ZHANG Tao
	SONG Xinli
	LIANG Xiaokai
	MA Yuxi
	XIANG Zhidong

Cite this article:

DENG Jie,SUN Xinjun,ZHANG Tao, et al. Effect of Cooling Rate on Microstructure and Hardness of Medium Manganese Martensitic Wear-resistant Steel[J]. Materials Reports, 2020, 34(10): 10126-10131.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.19050036 OR http://www.mater-rep.com/EN/Y2020/V34/I10/10126

1 Guo H, Liu Y, Li W. Materials Reports A:Review Papers, 2014, 28(4), 101(in Chinese).
郭红, 刘英, 李卫. 材料导报:综述篇, 2014, 28(4), 101.
2 Song H Y, Li C M, Lan L Y, et al. Journal of Iron and Steel Research, International, 2013, 20(8), 72.
3 Ju B, Wu H B, Tang D, et al. Acta Metallurgica Sinica, 2014, 50(9), 1056(in Chinese).
巨彪, 武会宾, 唐荻, 等. 金属学报, 2014, 50(9), 1056.
4 Jha A K, Prasad B K, Modi O P, et al. Wear, 2003, 254(1-2), 120.
5 Xu X J, Xu W, Ederveen F H, et al. Wear, 2013, 301(1-2), 83.
6 Ojala N, Valtonen K, Heino V, et al. Wear, 2014, 317(1-2), 225.
7 Liu X D. Development of low alloy martensite abrasion resistant steel with high strength and toughness. Master's thesis, Shandong University, China, 2016(in Chinese).
刘晓东. 高强韧低合金马氏体耐磨钢的研制. 硕士学位论文, 山东大学, 2016.
8 Park H S, Han J C, Lim N S, et al. Materials Science and Engineering A, 2015, 627, 262.
9 Wang Y, Zhang K, Guo Z D, et al. Acta Metallurgica Sinica, 2012, 48(6), 641(in Chinese).
王颖, 张柯, 郭正洪, 等. 金属学报, 2012, 48(6), 641.
10 Huang L, Deng X T, Liu J, et al. Acta Metallurgica Sinica, 2017, 53(3), 316(in Chinese).
黄龙, 邓想涛, 邓佳, 等. 金属学报, 2017, 53(3), 316.
11 He B G, Liu L, Huang M X. Metallurgical and Materials Transactions A, 2018, 49, 3617.
12 Yang J L, Jiang Y K, Gu J F, et al. Acta Metallurgica Sinica, 2018, 54(1), 29(in Chinese).
杨继兰, 蒋元凯, 顾剑锋, 等. 金属学报, 2018, 54(1), 29.
13 Haiko O, Somani M, Porter D, et al. Wear, 2018, 400-401, 26.
14 Santofimia M J, Nguyen-Minh T, Zhao L, et al. Materials Science and Engineering A, 2010, 527, 6429.
15 Diego-Calderon I, Sabirov I, Molina-Aldaregiua J M, et al. Materials Science and Engineering A, 2016, 657, 136.
16 Peng F, Xu Y B, Gu X L, et al. Materials Science and Engineering A, 2018, 723, 247.
17 Li Y J, Kang J, Zhang W N, et al. Materials Science and Engineering A, 2018, 720, 185.
18 Hu B Q. Metal heat treatment principles and process,China Railway Publishing House, China, 2017(in Chinese).
胡保全. 金属热处理原理与工艺, 中国铁道出版社, 2017.
19 Wu R, Liu J. Comprehensive experimental guidance book for practical teaching of metal materials engineering, Metallurgical Industry Press, China, 2008(in Chinese).
吴润, 刘静. 金属材料工程实践教学综合实验指导书, 冶金工业出版社, 2008.
20 Kim K, Lee S J. Materials Science and Engineering A, 2017, 698, 183.
21 Cheng L, Böttger A, Keijser T H, et al. Scripta Metallurgica et Materialia, 1990, 24(3), 511.
22 Dijk N H, Butt A M, Zhao L, et al. Acta Materialia, 2005, 53, 5442.
23 Li H Y, Li Y H, Wang X F, et al. Journal of Central South University, 2013, 44(7), 2704(in Chinese).
李红英, 李阳华, 王晓峰, 等. 中南大学学报, 2013, 44(7), 2704.
24 Zhao X M, Kang Y L, Han Q H. Journal of iron and steel research, international, 2011,18, 299.
25 Zhang C L, Cai D Y, Wang Y H, et al. Materials characterization, 2008, 59, 1641.
26 Amit K B, Olson G B. Scripta Materialia, 2018, 147, 7.
27 Hernandez V H B, Nayak S S, Zhou Y. Metallurgical and Materials Transactions A, 2011, 42(10), 3118.
28 Jang J H, Kim I G, Bhadeshia H K D H. Scipta Materialia, 2010, 63, 122.
29 Seo E J, Cho L, De Cooman B C. Metallurgical and Materials Transantions A, 2015, 46(1), 30.
30 Kim B, Sietsma J, Santofimia M J. Materials and Design, 2017, 127, 344.
31 Ariza E A, Poplawsky J, Guo W, et al. Metallurgical and Materials Transactions A, 2018, 49, 4822.
32 Yan S, Liu X H, Liu W J, et al. Materials Science and Engineering A, 2017, 684, 265.