Low-cost and high-strength Mg-Al-Ca-Zn-Mn wrought alloy with balanced ductility

Abstract

A novel low-cost Mg-Al-Ca-Zn-Mn-based alloy was developed to simultaneously improve its strength and ductility. The high yield strength of 411 MPa and the high elongation to failure of ∼8.9% have been achieved in the as-extruded Mg-1.3Al-1.2Ca-0.5Zn-0.6Mn (wt%) sample. Microstructure characterizations showed that the high strength is mainly associated with the ultra-fined dynamically recrystallized (DRXed) grains. Moreover, high-density dislocations in the un-DRXed region and nano-precipitates are distributed among the α-Mg matrix. The high ductility property can be ascribed to the high volume fraction of DRXed grains with a much randomized texture, as well as the formations of high-density subgrains in the un-DRXed grain regions.

Keywords

Mg wrought alloy / mechanical property / dynamic recrystallization / texture / nano-precipitation

References

[1] Ali Y, Qiu D, Jiang B, Pan FS, Zhang MX. Current research progress in grain refinement of cast magnesium alloys: A review article. J. Alloys Compd., 2015, 619, 639.

[2] You SH, Huang YD, Kainer KU, Hort N. Recent research and developments on wrought magnesium alloys. J. Magnes. Alloys, 2017, 5(3): 239.

[3] Li S, Cai JJ, Liu YL, Gao MQ, Cao F, Qin GW. Tuning orientation of doped hematite photoanodes for enhanced photoelectrochemical water oxidation. Sol. Energy Mater. Sol. Cells, 2018, 179, 328.

[4] Pan HC, Cheng RS, Du S, Xie HB, Wu L, Deng ZY, Yang CL, Ma LF, Qin GW. Achieving high strength in micro-alloyed Mg-Al-Ca-Zn-Mn-Ce alloy sheet processed by single-pass large-strain rolling. J. Mater. Eng. Perform., 2020, 29(11): 7115.

[5] Wang QH, Jiang B, Tang AT, Fu J, Jiang ZT, Sheng HR, Zhang DF, Huang GS, Pan FS. Unveiling annealing texture formation and static recrystallization kinetics of hot-rolled Mg-Al-Zn-Mn-Ca alloy. J. Mater. Sci. Technol., 2020, 43, 104.

[6] Song JF, She J, Chen DL, Pan FS. Latest research advances on magnesium and magnesium alloys worldwide. J. Magnes. Alloys, 2020, 8(1): 1.

[7] Bian MZ, Sasaki TT, Suh BC, Nakata T, Kamado S, Hono K. A heat-treatable Mg-Al-Ca-Mn-Zn sheet alloy with good room temperature formability. Scripta Mater., 2017, 138, 151.

[8] Wen K, Liu K, Wang ZH, Li SB, Du WB. Effect of microstructure evolution on mechanical property of extruded Mg-12Gd-2Er-1Zn-0.6Zr alloys. J. Magnes. Alloys, 2015, 3(1): 23.

[9] Zhu YM, Morton AJ, Nie JF. Growth and transformation mechanisms of 18R and 14H in Mg-Y-Zn alloys. Acta Mater., 2012, 60(19): 6562.

[10] Yuan M, Zheng ZQ. Effects of heat treatment on microstructure and mechanical properties of Mg-2.6Sm-1.3Gd-0.6Zn-0.5Zr alloy. Mater. Sci. Technol., 2014, 30(3): 261.

[11] Chi YQ, Zheng MY, Xu C, Du YZ, Qiao XG, Wu K, Liu XD, Wang GJ, Lv XY. Effect of ageing treatment on the microstructure, texture and mechanical properties of extruded Mg-8.2Gd-3.8Y-1Zn-0.4Zr (wt%) alloy. Mater. Sci. Eng. A, 2013, 565, 112.

[12] Homma T, Kunito N, Kamado S. Fabrication of extraordinary high-strength magnesium alloy by hot extrusion. Scripta Mater., 2009, 61(6): 644.

[13] Pan HC, Yang CL, Yang YT, Dai YQ, Zhou DS, Chai LJ, Huang QY, Yang QS, Liu SM, Ren YP, Qin GW. Ultra-fine grain size and exceptionally high strength in dilute Mg-Ca alloys achieved by conventional one-step extrusion. Mater. Lett., 2019, 237, 65.

[14] Pan HC, Kang R, Li JR, Xie HB, Zeng ZR, Huang QY, Yang CL, Ren YP, Qin GW. Mechanistic investigation of a low-alloy Mg-Ca-based extrusion alloy with high strength-ductility synergy. Acta Mater., 2020, 186, 278.

[15] Zhang AY, Kang R, Wu L, Pan HC, Xie HB, Huang QY, Liu YJ, Ai ZR, Ma LF, Ren YP, Qin GW. A new rare-earth-free Mg-Sn-Ca-Mn wrought alloy with ultra-high strength and good ductility. Mater. Sci. Eng. A, 2019, 754, 269.

[16] Liu CQ, Chen XH, Chen J, Atrens A, Pan FS. The effects of Ca and Mn on the microstructure, texture and mechanical properties of Mg-4 Zn alloy. J. Magnes. Alloys, 2021, 9(3): 1084.

[17] Ikeo N, Nishioka M, Mukai T. Fabrication of biodegradable materials with high strength by grain refinement of Mg-0.3at.% Ca alloys. Mater. Lett., 2018, 223, 65.

[18] Pan HC, Qin GW, Huang YM, Ren YP, Sha XC, Han XD, Liu ZQ, Li CF, Wu XL, Chen HW, He C, Chai LJ, Wang YZ, Nie JF. Development of low-alloyed and rare-earth-free magnesium alloys having ultra-high strength. Acta Mater., 2018, 149, 350.

[19] D.S. Xie, H.C. Pan, M. Li, J.R. Li, Y.P. Ren, Q.Y. Huang, C.L. Yang, L.F. Ma, and G.W. Qin, Role of Al addition in modifying microstructure and mechanical properties of Mg-1.0 wt% Ca based alloys, Mater. Charact., 169(2020), art. No. 110608.

[20] M. Li, D.S. Xie, J.R. Li, H.B. Xie, Q.Y. Huang, H.C. Pan, and G.W. Qin, Realizing ultra-fine grains and ultra-high strength in conventionally extruded Mg-Ca-Al-Zn-Mn alloys: The multiple roles of nano-precipitations, Mater. Charact., 175(2021), art. No. 111049.

[21] Jiang ZT, Jiang B, Yang H, Yang QS, Dai JH, Pan FS. Influence of the Al₂Ca phase on microstructure and mechanical properties of Mg-Al-Ca alloys. J. Alloys Compd., 2015, 647, 357.

[22] Nakata T, Xu C, Ajima R, Shimizu K, Hanaki S, Sasaki TT, Ma L, Hono K, Kamado S. Strong and ductile age-hardening Mg-Al-Ca-Mn alloy that can be extruded as fast as aluminum alloys. Acta Mater., 2017, 130, 261.

[23] Zeng ZR, Zhu YM, Nie JF, Xu SW, Davies CHJ, Birbilis N. Effects of calcium on strength and microstructural evolution of extruded alloys based on Mg-3Al-1Zn-0.3Mn. Metall. Mater. Trans. A, 2019, 50(9): 4344.

[24] Q.Y. Huang, Y. Liu, M. Tong, H.C. Pan, C.L. Yang, T.J. Luo, and Y.S. Yang, Enhancing tensile strength of Mg-Al-Ca wrought alloys by increasing Ca concentration, Vacuum, 177(2020), art. No. 109356.

[25] Nene SS, Zellner S, Mondal B, Komarasamy M, Mishra RS, Brennan RE, Cho KC. Friction stir processing of newly-designed Mg-5Al-3.5Ca-1Mn (AXM541) alloy: Microstructure evolution and mechanical properties. Mater. Sci. Eng. A, 2018, 729, 294.

[26] Li ZT, Qiao XG, Xu C, Kamado S, Zheng MY, Luo AA. Ultrahigh strength Mg-Al-Ca-Mn extrusion alloys with various aluminum contents. J. Alloys Compd., 2019, 792, 130.

[27] Elamami HA, Incesu A, Korgiopoulos K, Pekguleryuz M, Gungor A. Phase selection and mechanical properties of permanent-mold cast Mg-Al-Ca-Mn alloys and the role of Ca/Al ratio. J. Alloys Compd., 2018, 764, 216.

[28] Liu H, Sun C, Wang C, Li YH, Bai J, Xue F, Ma AB, Jiang JH. Improving toughness of a Mg₂Ca-containing Mg-Al-Ca-Mn alloy via refinement and uniform dispersion of Mg₂Ca particles. J. Mater. Sci. Technol., 2020, 59, 61.

[29] Cihova M, Schaublin R, Hauser LB, Gerstl SSA, Simson C, Uggowitzer PJ, Lofflfler JF. Rational design of a lean magnesium-based alloy with high age-hardening response. Acta Mater., 2018, 158, 214.

[30] Xu SW, Oh-Ishi K, Kamado S, Uchida F, Homma T, Hono K. High-strength extruded Mg-Al-Ca-Mn alloy. Scripta Mater., 2011, 65(3): 269.

[31] Cao G, Kou S. Hot tearing of ternary Mg-Al-Ca alloy castings. Metall. Mater. Trans. A, 2006, 37(12): 3647.

[32] Huang H, Liu H, Wang C, Sun JP, Bai J, Xue F, Jiang JH, Ma AB. Potential of multi-pass ECAP on improving the mechanical properties of a high-calcium-content Mg-Al-Ca-Mn alloy. J. Magnes. Alloys, 2019, 7(4): 617.

[33] Wu HJ, Cheng RS, Li JR, Xie DS, Song K, Pan HC, Qin GW. Effect of Al content on microstructure and mechanical properties of Mg-Sn-Ca alloy. Acta Metall. Sin., 2020, 56(10): 1423

[34] Zeng ZR, Zhu YM, Xu SW, Bian MZ, Davies CHJ, Birbilis N, Nie JF. Texture evolution during static recrystallization of cold-rolled magnesium alloys. Acta Mater., 2016, 105, 479.

[35] Nie KB, Zhu ZH, Deng KK, Han JG. Effect of extrusion temperature on microstructure and mechanical properties of a low-alloying and ultra-high strength Mg-Zn-Ca-Mn matrix composite containing trace TiC nanoparticles. J. Magnes. Alloys, 2020, 8(3): 676.

[36] Guan B, Xin YC, Huang XX, Wu PD, Liu Q. Quantitative prediction of texture effect on Hall-Petch slope for magnesium alloys. Acta Mater., 2019, 173, 142.

[37] Yuan W, Panigrahi SK, Su JQ, Mishra RS. Influence of grain size and texture on Hall-Petch relationship for a magnesium alloy. Scripta Mater., 2011, 65(11): 994.

[38] Jang HS, Lee JK, Tapia AJSF, Kim NJ, Lee BJ. Activation of non-basal <c + a> slip in multicomponent Mg alloys. J. Magnes. Alloys, 2022, 10(2): 585.

[39] J. She, S.B. Zhou, P. Peng, A.T. Tang, Y. Wang, H.C. Pan, C.L. Yang, and F.S. Pan, Improvement of strength-ductility balance by Mn addition in Mg-Ca extruded alloy, Mater. Sci. Eng. A, 772(2020), art. No. 138796.

[40] Zhang Z, Zhang JH, Wang J, Li ZH, Xie JS, Liu SJ, Guan K, Wu RZ. Toward the development of Mg alloys with simultaneously improved strength and ductility by refining grain size via the deformation process. Int. J. Miner. Metall. Mater., 2021, 28(1): 30.

[41] Hassan J, Mojiri TAH, Mojiri T, Mahsa H. Effect of extrusion process on microstructure and mechanical and corrosion properties of biodegradable Mg-5Zn-1.5Y magnesium alloy. Int. J. Miner. Metall. Mater., 2022, 29(3): 490.

[42] Yang QS, Jiang B, Song B, Yu ZJ, He DW, Chai YF, Zhang JY, Pan FS. The effects of orientation control via tension-compression on microstructural evolution and mechanical behavior of AZ31 Mg alloy sheet. J. Magnes. Alloys, 2022, 10(2): 411.

[43] Q.H. Wang, H.W. Zhai, L.T. Liu, H.B. Xia, B. Jing, J. Zhao, D.L. Chen, and F.S. Pan, Novel Mg-Bi-Mn wrought alloys: The effects of extrusion temperature and Mn addition on their microstructures and mechanical properties, J. Magnes. Alloys, (2021). DOI: https://doi.org/10.1016/j.jma.2021.11.028