晶粒尺寸对贝氏体钢SDP1的连续冷却转变规律的影响

doi:10.11896/j.issn.1005-023X.2017.06.018

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (3762KB)
Export: BibTeX | EndNote (RIS)

Abstract Continuous cooling transformation (CCT) curves of SDP1 with 150 μm and 20 μm grain size were tested by dilatometer. Based on the curves, the effect of grain size on phase transformation, microstructure and hardness of the SDP1 steel were studied by means of OM, SEM, hardness test, thermodynamic calculation and kinetic analysis.The experimental results showed that specimen with smaller grain could display lamellar pearlite in the low cooling rate conditions with hardness about 305HV and had a smaller bainitic transformation zone. The specimen with bigger grain size had no pearlite formation and bainitic transformation zone was larger with hardness about 423HV. The activation energy of bainitic transformation of specimens with grain size of 150 μm and 20 μm were 124 kJ·mol^-1 and 134 kJ·mol^-1, respectively.

Key words： pre-hardening plastic mould steel grain size phase transformation bainite CCT diagrams

Published: 25 March 2017 Online: 2018-05-02

CLC number:

TG151.2

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LI Xiaocheng
	ZHENG Yafeng
	WU Xiaochun

Cite this article:

LI Xiaocheng,ZHENG Yafeng,WU Xiaochun. Influence of Grain Size on Continuous Cooling Transformation Rules of a
Bainitic Steel SDP1[J]. Materials Reports, 2017, 31(6): 86-92.

URL:

https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.06.018 OR https://www.mater-rep.com/EN/Y2017/V31/I6/86

1 Zuo P P, Zhang Z, Ji W L, et al.Hardness and microstructure of bainite pre-hardened plastic mould steel in large block[J].Shanghai Met,2012,34(5):25(in Chinese).
左鹏鹏, 张铮, 季文龙,等.贝氏体预硬型塑料模具钢大模块硬度与组织分析[J].上海金属,2012,34(5):25.
2 Luo Y. Design and research on the non-quenched prehardened plastic mould steel[D].Shanghai:Shanghai University,2009(in Chinese).
罗毅. 非调质塑料模具钢的设计与研究 [D].上海:上海大学,2009.
3 Wu X C, Zhang Z. Status and development of microalloyed plastic mould steels with medium-low carbon[J].Die Mould Ind,2013,39(6):1(in Chinese).
吴晓春, 张铮.中低碳微合金塑料模具钢研究现状与进展[J].模具工业,2013,39(6):1.
4 Yang W Y, Hu A M, Sun Z Q. Effect of austrnite grain size on strain enhanced transformation in a low carbon steel[J].Acta Metall Sin,2000,36(10):1055(in Chinese).
杨王玥, 胡安民,孙祖庆. 低碳钢奥氏体晶粒控制对应变强化相变的影响[J].金属学报,2000,36(10):1055.
5 Han B J. Research on the grain ultra-refinement in austenite by dynamic recrystallization and its martensitic transformation[D].Shanghai:Shanghai Jiao Tong University,2008(in Chinese).
韩宝军. 奥氏体动态再结晶晶粒超细化及其马氏体相变研究[D].上海:上海交通大学,2008.
6 Zhao Hongzhuang, Young-kook, Liu Xianghua, et al.The effects of austenite grain size on banite transformation kinetics in AISI 4340 steel[J]. Trans Mater Heat Treat,2006,27(2):59(in Chinese).
赵洪壮, Young-kook, 刘相华,等. 奥氏体晶粒度对 AISI 4340 钢贝氏体相变动力学的影响[J]. 材料热处理学报,2006,27(2):59.
7 Wang J, Chu Z, Zhang Q. Research on austenitic grain growth in micro-alloyed forging steel[J].Hot Work Technol,2012,41(10):14(in Chinese).
王进, 褚忠, 张琦. 非调质钢奥氏体晶粒长大行为研究[J].热加工工艺,2012,41(10):14.
8 Yao S J.Investigation on related microstructure control and theory of uitra-refinement of austenite grains in microalloyed steel[D].Shenyang:Northeastern University,2009(in Chinese).
姚圣杰. 微合金钢奥氏体晶粒超细化的相关组织控制及理论研究.[D].沈阳:东北大学,2009.
9 Ning B Q.Phase transformations and strengthening processes of T91 ferritic heat-resistant steel[D].Tianjin:Tianjin University,2007(in Chinese).
宁保群. T91 铁素体耐热钢相变过程及强化工艺[D].天津:天津大学,2007.
10 Min Y A, Deng C Y, Zhang Z, et al. Effect of chromium content on pearlite transformation microstructure and properties of medium carbon Mn-Cr steels[J].Trans Mater Heat Treat,2014,35(2):86(in Chinese).
闵永安, 邓传印, 张铮, 等. 铬含量对中碳锰铬钢珠光体相变组织和性能的影响[J].材料热处理学报,2014,35(2):86.
11 Mahadevan S, Giridhar A, Singh A. Calorimetric measurements on As-Sb-Se glasses[J].J Non-cryst Solids,1986,88:11.
12 Kumar S, Singh K, Mehta N. Calorimetric studies of crystallisation kinetics of Se₇₅Te_15-x Cd₁₀In_x multi-component chalcogenide glasses using non-isothermal DSC[J].Philos Mag Lett,2010,90:547.
13 Baumann W, Leineweber A, Mittemeijer E J. Failure of Kissinger (-like) methods for determination of the activation energy of phase transformations in the vicinity of the equilibrium phase-transformation temperature[J]. J Mater Sci,2010,45:6075.
14 Gao Y Q, Wang W. On the activation energy of crystallization in metallic glasses[J]. J Non-cryst Solids,1986,81:129.
15 Sidel S, Santos F, Gordo V, et al. Avrami exponent of crystallization in tellurite glasses[J]. J Therm Anal Calorim,2011,106:613.
16 Duan L L, Zhang Z, Li X C, et al. Transformation process and kinetics in a new plastic mould of bainite steel SDP2[J].Trans Mater Heat Treat,2015,36(8):174(in Chinese).
段丽丽, 张铮, 李晓成, 等. SDP2 新型贝氏体模具钢的相变及动力学[J].材料热处理学报,2015,36(8):174.
17 Zhang Z M, Cai Q W, Wei Y, et al. Continuous cooling transformation behavior and kinetic models of transformations for an ultra-low carbon bainitic steel[J]. J Iron Steel Res Int,2012,19:73.