Effect of Initial Grain Size on Microstructure and Mechanical Properties of Extruded Mg-9Al-0.6Zn Alloy
作者： Sung Hyuk Park , Jun Ho Bae , Sang-Hoon Kim , Jonghun Yoon , Bong Sun You
DOI: 10.1007/S11661-015-3164-1
关键词:
摘要: The effect of initial grain size on the microstructural evolution and tensile properties an extruded Mg-9Al-0.6Zn alloy was investigated using homogenized billets with sizes 411 87 μm. It is found that although dynamically recrystallized (DRXed) grains remain same regardless size, a finer-grained billet results in significant reduction area fraction un-DRXed through increase boundaries capable acting as nucleation sites for DRX during hot extrusion. This DRXed grains, combined more precipitates, improves yield strength alloy. elongation also significantly improved, unDRXed suppresses formation twins cause micro-cracks. increased ductility subsequently ultimate continuous strain hardening.
springer.com
core.ac.uk
harvard.edu
sci-hub.se 参考文章(28)
Hui Yu, Sung Hyuk Park, Bong Sun You, Die angle dependency of microstructural inhomogeneity in an indirect-extruded AZ31 magnesium alloy Journal of Materials Processing Technology. ,vol. 224, pp. 181- 188 ,(2015) , 10.1016/J.JMATPROTEC.2015.05.003
M.R. Barnett, Twinning and the ductility of magnesium alloys: Part II. “Contraction” twins Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 464, pp. 8- 16 ,(2007) , 10.1016/J.MSEA.2007.02.109
Sung Hyuk Park, Bong Sun You, Effect of homogenization temperature on the microstructure and mechanical properties of extruded Mg–7Sn–1Al–1Zn alloy Journal of Alloys and Compounds. ,vol. 637, pp. 332- 338 ,(2015) , 10.1016/J.JALLCOM.2015.03.030
D.L. Atwell, M.R. Barnett, W.B. Hutchinson, The effect of initial grain size and temperature on the tensile properties of magnesium alloy AZ31 sheet Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 549, pp. 1- 6 ,(2012) , 10.1016/J.MSEA.2012.03.107
Hui Yu, Young Min Kim, Bong Sun You, Hua Shun Yu, Sung Hyuk Park, Effects of cerium addition on the microstructure, mechanical properties and hot workability of ZK60 alloy Materials Science and Engineering: A. ,vol. 559, pp. 798- 807 ,(2013) , 10.1016/J.MSEA.2012.09.026
D. Wu, R.S. Chen, W.N. Tang, E.H. Han, Influence of texture and grain size on the room-temperature ductility and tensile behavior in a Mg-Gd-Zn alloy processed by rolling and forging Materials & Design. ,vol. 41, pp. 306- 313 ,(2012) , 10.1016/J.MATDES.2012.04.033
A LUO, Heterogeneous Nucleation and Grain Refinement in Cast Mg(AZ91)/SiCP Metal Matrix Composites Canadian Metallurgical Quarterly. ,vol. 35, pp. 375- 383 ,(1996) , 10.1016/S0008-4433(96)00014-6
Muhammad Shahzad, Lothar Wagner, Influence of extrusion parameters on microstructure and texture developments, and their effects on mechanical properties of the magnesium alloy AZ80 Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 506, pp. 141- 147 ,(2009) , 10.1016/J.MSEA.2008.11.038
Alexei Vinogradov, Dmitry Orlov, Alexei Danyuk, Yuri Estrin, Effect of grain size on the mechanisms of plastic deformation in wrought Mg-Zn-Zr alloy revealed by acoustic emission measurements Acta Materialia. ,vol. 61, pp. 2044- 2056 ,(2013) , 10.1016/J.ACTAMAT.2012.12.024
Sung Hyuk Park, Bong Sun You, Raja K. Mishra, Anil K. Sachdev, Effects of extrusion parameters on the microstructure and mechanical properties of Mg–Zn–(Mn)–Ce/Gd alloys Materials Science and Engineering: A. ,vol. 598, pp. 396- 406 ,(2014) , 10.1016/J.MSEA.2014.01.051