P-ECAP挤压镁合金空心壁板的晶粒度演变模拟和实验研究

doi:10.11896/cldb.18020067

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (2737KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to confirm the optimum extrusion parameters for ZK60 magnesium alloy,the influences of extrusion parameters on the grain size were studied.Finite element modeling (FEM) was applied for predicting the grain size evolution in extruded ZK60 magnesium alloy and simulated results were experimentally validated. First, microstructure evolution of ZK60 magnesium alloy during deformation was studied by means of isothermal compression test. Second, microstructure evolution was analyzed, and the obtained information was used to fit a dynamic recrystallization model implementing inside the Deform-3D FEM code environment. FEM of deformation of ZK60 magnesium alloy have been established and validated by grain size comparison. Finally, the obtained dynamic recrystallization model was applied to hollow plate extrusion by using a portholes-equal channel angular pressing (P-ECAP) die. The finite element analysis results showed that coarse DRX grains occured in the strengthening rib of extruded plate at higher temperature and in the extruded plate at the faster speed of the ram. The test results showed that material from the front end of the extruded plate has coarse grains and other extruded has finer grains. The grain structure displays approximate equiaxed structure in transverse directions and bands of elongated grains in the longitudinal section. Prediction technique, influencing factor and influence law on grain size evolution in extrusion processing were expounded.

Key words： magnesium alloy dynamic recrystallization extrusion finite element modelling

Published: 31 May 2019

CLC number:

TG376.2

Fund:This work was financially supported by the Chinese Postdoctoral Science Foundationt (2016M602238), Key Scientific Research Foundation of Higher Education Institutions of Henan Province (17A430025), Key Science and Technology Program of Henan Province (172102210403,172102210399,122102210059), Natural Science Foundation of Henan Province (182300410208).

About author:: Lei Shireceived her Ph.D. degree in materials processing engineering from Northwestern Polytechnical University in 2015. He is a lecturer in School of Mate-rials Science and Engineering, Luoyang Institute of Science and Technology from 2017 to the present. His research interests are precision plastic forming, extrusion of alloys.Yi Liureceived her Ph.D. degree in materials proces-sing engineering from Northwestern Polytechnical University in 2016. He is a lecturer in School of Materials Science and Engineering, Luoyang Institute of Science and Technology from 2017 to the present. His research interests are nonequilibrium solidification, casting and microstructure evolution of alloys.

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	SHI Lei
	LIU Yi
	SHEN Junfang
	JIN Wenzhong
	WANG Li
	ZHANG Wei

Cite this article:

SHI Lei,LIU Yi,SHEN Junfang, et al. Simulation and Experimental Study on Grain Size Evolution of P-ECAP Extrusion Magnesium Alloy Hollow Plate[J]. Materials Reports, 2019, 33(12): 2019-2024.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.18020067 OR http://www.mater-rep.com/EN/Y2019/V33/I12/2019

1 Schikorr M, Donati L, Tomesani L, et al.Journal of Materials Processing Technology, 2008, 201, 156.
2 Mol J M C, Langkruis J V D, Wit J H W D, et al. Corrosion Science, 2005, 47, 2711.
3 Jiang W G, Wang G C, Lu S Q, et al. Journal of Materials Processing Technology, 2007, 182, 274.
4 Lin Y C, Li L T, Xia Y C. Computational Materials Science, 2011, 50, 2038.
5 Samantaray D, Mandal S, Bhaduri A K, et al. Materials Science & Engineering A, 2011, 528, 1937.
6 Wu K, Liu G Q, Hu B F, et al. Materials & Design, 2011, 32, 1872.
7 Yuan Z W, Li F G, Qiao H J, et al. Materials Science and Engineering A, 2013, 578, 260.
8 Fan X G, Yang H, Gao P F.Materials & Design, 2013, 51, 34.
9 Fan X G, Yang H, Gao P F. Journal of Materials Processing Technology, 2014, 214, 253.
10Du Q, Poole W J, Wells M A, et al. Acta Materialia, 2013, 61, 4961.
11Kang Z Q, Wang E G, Zhang L, et al. Journal of Functional Materials, 2011,42(S2):197(in Chinese).
康智强, 王恩刚, 张林, 等功能材料, 2011,42(S2):197.
12Sun Y, Zhou C, Wan Z P, et al. Materials Review A:Review Papers, 2017, 31(7),12(in Chinese).
孙宇, 周琛, 万志鹏,等. 材料导报:综述篇, 2017, 31(7),12.
13Chen W, Guan Y P, Wang Z H. Materials Review B:Research Papers, 2016, 30(11),164(in Chinese).
陈微, 官英平, 王振华. 材料导报:研究篇, 2016, 30(11),164.
14Simar A, Nielsen K L, Meester B D, et al. Engineering Fracture Mechanics, 2010, 77, 2491.
15Clayton J D. Composites: Part B, 2009, 40, 443.
16Liu Y, Hu R, Zhang T, et al. Journal of Materials Engineering and Performance, 2016, 25, 38.
17Galindo-Nava E I, Rivera-Díaz-del-Castillo P E J. Scripta Materialia, 2014, 72, 1.
18Li H, Wu C, Yang H. International Journal of Plasticity, 2013, 51, 271.
19Brown A A, Bammann D J. International Journal of Plasticity, 2012, 32-33, 17.
20Donati L, Dzwonczyk J S, Zhou J, et al. Key Engineering Materials, 2008, 367, 107.
21Yin F, Hua L, Mao H, et al. Materials & Design, 2014, 55, 560.
22Shi L, Yang H, Guo L G, et al. Transactions of Nonferrous Metals Society of China, 2014, 24, 1521.
23Shi L. Investigation on deformation mechanism of aluminum alloy during porthole ECAP spread extrusion. Ph.D.Thesis, Northwestern Polytechnical University, China, 2015(in Chinese).
石磊. 铝合金等通道转角分流大宽展挤压成形机理研究.博士学位论文,西北工业大学, 2015.
24Shi L, Li H, Jin W Z, et al. The International Journal of Advanced Manufacturing Technology, 2016, 85, 355.
25Liu F, Wang Q J, Du Z Z, et al. Journal of Functional Materials, 2014, 45(7), 7116 (in Chinese).
刘锋, 王庆娟, 杜忠泽, 等. 功能材料, 2014, 45(7), 7116.