Effects of Sn on microstructure and mechanical properties of Mg–5Zn–1Mn alloy subjected to high strain rate rolling (9.1 s-1), 300°C and 80% pass reduction are investigated. With higher Sn content, the dynamic recrystallisation (DRX) grain size gradually decreases due to the stronger pinning of nano-scale precipitates at grain boundaries and the DRX fraction first increases due to the enhanced effect on DRX by decreasing stacking fault energy and then decreases due to more precipitates at grain boundaries. Ultimate tensile strength (UTS) and elongation to rupture (Er) of as-rolled alloys increase and then decrease. Alloy with 0.9 mass% Sn exhibits the highest DRX fraction (95 vol.-%), the finer DRX grain size (1.22 µm), UTS of 358 MPa and Er of 20.4%.
LetzigD, SwiostekJ, BohlenJ, Wrought magnesium alloys for structural applications. Mater Sci Technol. 2013;24(8):991–996. doi: 10.1179/174328407X213080
2.
MordikeBL, EbertT.Magnesium: properties-applications-potential. Mater Sci Eng A. 2001;302(1):37–45. doi: 10.1016/S0921-5093(00)01351-4
3.
YooMH.Slip, twinning, and fracture in hexagonal close-packed metals. Metall Trans A. 1981;12(3):409–418. doi: 10.1007/BF02648537
4.
StjohnDH, QianMA, EastonMA, Native grain refinement of magnesium alloys. Metall Mater Trans A. 2005;36(7):1669–1679. doi: 10.1007/s11661-005-0030-6
5.
HanBQ, DunandDC.Microstructure and mechanical properties of magnesium containing high volume fractions of yttria dispersoids. Mater Sci Eng A. 2000;277(1):297–304. doi: 10.1016/S0921-5093(99)00074-X
6.
ZhuSQ, YanHG, ChenJH, Fabrication of Mg-Al-Zn-Mn alloy sheets with homogeneous fine-grained structures using high strain-rate rolling in a wide temperature range. Mater Sci Eng A. 2013;559(1):765–772. doi: 10.1016/j.msea.2012.09.022
7.
ZhuSQ, YanHG, ChenJH, Feasibility of high strain-rate rolling of a magnesium alloy across a wide temperature range. Scr Mater. 2012;67(4):404–407. doi: 10.1016/j.scriptamat.2012.05.036
8.
ZhuSQ, YanHG, LiaoXZ, Mechanisms for enhanced plasticity in magnesium alloys. Acta Mater. 2015;82:344–355. doi: 10.1016/j.actamat.2014.09.006
9.
SuJ, SanjariM, KabirASH, Dynamic recrystallization mechanisms during high speed rolling of Mg-3Al-1Zn alloy sheets. Scr Mater. 2015;113:198–201. doi: 10.1016/j.scriptamat.2015.10.040
10.
GuoF, ZhangD, YangX, Effect of rolling speed on microstructure and mechanical properties of AZ31 Mg alloys rolled with a wide thickness reduction range. Mater Sci Eng A. 2014;619:66–72. doi: 10.1016/j.msea.2014.09.024
11.
AsgariH, SzpunarJA, OdeshiAG.Texture evolution and dynamic mechanical behavior of cast AZ magnesium alloys under high strain rate compressive loading. Mater Des. 2014;61:26–34. doi: 10.1016/j.matdes.2014.04.049
12.
RuoffAL.Enhanced diffusion during plastic deformation by mechanical diffusion. J Appl Phys. 1967;38(10):3999–4003. doi: 10.1063/1.1709056
13.
YangY, WangZ, JiangL.Evolution of precipitates in ZK60 magnesium alloy during high strain rate deformation. J Alloys Compd. 2017;705:566–571. doi: 10.1016/j.jallcom.2017.02.158
14.
WeiS, ZhuT, HodgsonM, Effects of Sn addition on the microstructure and mechanical properties of as-cast, rolled and annealed Mg-4Zn alloys. Mater Sci Eng A. 2013;585(12):139–148. doi: 10.1016/j.msea.2013.07.051
15.
QiF, ZhangD, ZhangX, Effect of Sn addition on the microstructure and mechanical properties of Mg-6Zn-1Mn(wt.%) alloy. J Alloys Compd. 2014;585(3):656–666. doi: 10.1016/j.jallcom.2013.09.156
16.
XiaoW, JiaS, WangL, Effects of Sn content on the microstructure and mechanical properties of Mg-7Zn-5Al based alloys. Mater Sci Eng A. 2010;527(26):7002–7007. doi: 10.1016/j.msea.2010.07.019
17.
ChangLL, TangH, GuoJ.Strengthening effect of nano and micro-sized precipitates in the hot-extruded Mg-5Sn-3Zn alloys with Ca addition. J Alloys Compd. 2017;703:552–559. doi: 10.1016/j.jallcom.2017.01.274
18.
ShangSL, WangWY, ZhouBC, Generalized stacking fault energy, ideal strength and twinnability of dilute Mg-based alloys: A first-principles study of shear deformation. Acta Mater. 2014;67:168–180. doi: 10.1016/j.actamat.2013.12.019
19.
ZhangHY, WangHY, WangC, First-principles calculations of generalized stacking fault energy in Mg alloys with Sn, Pb and Sn+Pb dopings. Mater Sci Eng A. 2013;584:82–87. doi: 10.1016/j.msea.2013.07.008
20.
MuzykM, PakielaZ, KurzydlowskiKJ.Generalized stacking fault energy in magnesium alloys: density functional theory calculations. Scr Mater. 2012;66(5):219–222. doi: 10.1016/j.scriptamat.2011.10.038
21.
American Society for Testing and Materials (ASTM). Standard test methods for determining average grain size using semi-automatic and automatic image analysis. West Conshohocken ( PA): ASTM; 2015. E1382-97.
MaoW-m, ZhaoX.[Metals recrystallization and grain growth]. Beijing: Metallurgical Industry Press; 1994. Chinese.
24.
ZlatevaG, MartinovaZ.Microstructure of metals and alloys: an atlas of transmission electron microscopy images. New York ( NY): Crc Press; 2008.
25.
SwannPR.Dislocation substructure vs transgranular stress corrosion susceptibility of single phase alloys. Corrosion. 1963;19(3):102–112. doi: 10.5006/0010-9312-19.3.102
26.
WangC, CuiZ, LiuH, Electrical and thermal conductivity in Mg-5Sn alloy at different aging status. Mater Des. 2015;84:48–52. doi: 10.1016/j.matdes.2015.06.110
27.
WeiS, ZhuT, HouH, Effects of Pb/Sn additions on the age-hardening behavior of Mg-4Zn alloys. Mater Sci Eng A. 2014;597(5):52–61. doi: 10.1016/j.msea.2013.12.048
28.
WuKC, ChangSY, YehJW.Optimizing super plasticity of AZ91-xSn magnesium alloys with competitive grain growth and boundary sliding. Mater Sci Eng A. 2015;646:201–206. doi: 10.1016/j.msea.2015.08.066
29.
ChengW, BaiY, WangL, Strengthening effect of extruded Mg-8Sn-2Zn-2Al alloy: influence of micro and nano-size Mg2Sn precipitates. Materials (Basel). 2017;10(7):822–833. doi: 10.3390/ma10070822
30.
KabirASH, SuJ, JungIH, Study of dynamic precipitation during hot deformation of Mg-Al-Sn alloys. Mater Sci Forum. 2013;765:461–465. doi: 10.4028/www.scientific.net/MSF.765.461
31.
KabirASH, SanjariM, SuJ, Effect of strain-induced precipitation on dynamic recrystallization in Mg-Al-Sn alloys. Mater Sci Eng A. 2014;616:252–259. doi: 10.1016/j.msea.2014.08.032
32.
ParkSH, JungJG, KimYM, A new high-strength extruded Mg-8Al-4Sn-2Zn alloy. Mater Lett. 2015;139(139):35–38. doi: 10.1016/j.matlet.2014.10.033
33.
ParkSH, YouBS.Effect of homogenization temperature on the microstructure and mechanical properties of extruded Mg-7Sn-1Al-1Zn alloy. J Alloys Compd. 2015;637:332–338. doi: 10.1016/j.jallcom.2015.03.030
34.
HradilováM, MontheilletF, FraczkiewiczA, Effect of Ca-addition on dynamic recrystallization of Mg-Zn alloy during hot deformation. Mater Sci Eng A. 2014;616(10):217–226.
35.
JiangJ, SongM, YanH, Deformation induced dynamic recrystallization and precipitation strengthening in an Mg-Zn-Mn alloy processed by high strain rate rolling. Mater Charact. 2016;121:135–138. doi: 10.1016/j.matchar.2016.09.025
36.
JiangLY, ZhangDF, FanXW, Microstructure and mechanical properties of as-extruded AZ80-xSn magnesium alloys. Mater Sci Technol. 2015;32(18):1838–1844. doi: 10.1179/1743284715Y.0000000146
37.
ChenC, ChenJ, YanH, Dynamic precipitation, microstructure and mechanical properties of ZM51 alloy sheets prepared by high strain-rate rolling. Mater Des. 2016;100:58–66. doi: 10.1016/j.matdes.2016.03.129
