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通过向纯镁中添加微量Zn或Ca以诱发变形过程中动态析出并改善其力学性能。制备了Mg-3 mass%Zn、Mg-0.2 mass%Ca和Mg-3 mass%Zn-0.2 mass%Ca合金，研究了Zn和Ca添加对镁合金变形过程中动态析出行为及强塑性的影响。结果表明：在镁中单独添加Zn或Ca后经轧制变形后未观察到动态析出相，而Zn和Ca复合添加导致了球形Ca_2Mg_6Zn3相的动态析出，Mg-Zn-Ca合金中的动态析出相可抑制再结晶晶粒长大，得到尺寸约为20μm的再结晶晶粒；轧制态Mg-Zn-Ca合金表现出了最佳的综合力学性能，其抗拉强度为246 MPa、屈服强度为225 MPa、伸长率为10.2%,这些优异的强塑性主要归因于球形动态析出相Ca_2Mg_6Zn3、细小的动态再结晶组织以及较弱的基面织构。
Abstract：By adding trace amounts of Zn or Ca to pure magnesium to induce dynamic precipitation during deformation and improve its mechanical properties. Mg-3 mass%Zn, Mg-0.2 mass%Ca, and Mg-3 mass%Zn-0.2 mass%Ca alloys were prepared, and the effects of Zn and Ca additions on dynamic precipitation behavior and strength and plasticity of the magnesium alloys during deformation were studied. The results show that no dynamic precipitation phase is observed after rolling deformation after adding Zn or Ca separately to magnesium, while the composite addition of Zn and Ca results in the dynamic precipitation of spherical Ca_2Mg_6Zn3 phase. The dynamic precipitation phase in the Mg-Zn-Ca alloy can suppress the growth of recrystallized grains and obtain recrystallized grains with a size of about 20 μm. The rolled Mg-Zn-Ca alloy exhibits the best comprehensive mechanical properties, with a tensile strength of 246 MPa, a yield strength of 225 MPa, and an elongation of 10.2%. These excellent strength ductility are mainly attributed to the spherical dynamic precipitation phase Ca_2Mg_6Zn3, fine dynamic recrystallization microstructure, and weakened basal texture.
[1] Zhang H F,Ding Y T,Li R M,et al.Achieving exceptional improvement of yield strength in Mg-Zn-Ca alloy wire by nanoparticles induced by extreme plastic deformation[J].Materials Science and Engineering A,2022,853:143733.
[2] Koushki A,Jalali A,Rasooli N,et al.Strength-ductility synergy in a wrought AZ80 magnesium alloy by microstructure engineering[J].Materials Science and Engineering A,2024,889:145764.
[3] 顾佳卿，唐伟能，徐世伟.Mg-0.4Zn镁合金挤压板拉伸变形组织的演变[J].材料研究学报，2021,35(7):553-560.GU Jia-qing,TANG Wei-neng,XU Shi-wei.Microstructure evolution during tensile deformation of an extruded Mg-0.4Zn alloy plate[J].Chinese Journal of Materials Research,2021,35(7):553-560.
[4] He G M,Zhou Y X,Gu Z H,et al.Low-cost high-strength Mg-7Zn-xAl-0.3Mn (x=1,3,5) cast magnesium alloys via grain boundary strengthening and precipitation strengthening[J].Materials Science and Engineering A,2023,885:145664.
[5] Li D D,Le Q C,Zhou X,et al.Study on the low mechanical anisotropy of extruded Mg-Zn-Mn-Ce-Ca alloy tube in the compression process[J].Journal of Magnesium and Alloys,2024,12(3):1054-1067.
[6] 王健，李全安，陈晓亚，等.Mg-8Al-1Zn-1Y镁合金动态再结晶临界条件及动力学模型的构建[J].材料热处理学报，2023,44(4):177-186.WANG Jian,LI Quan-an,CHEN Xiao-ya,et al.Dynamic recrystallization critical conditions and construction of kinetic model of Mg-8Al-1Zn-1Y magnesium alloy[J].Transactions of Materials and Heat treatment,2023,44(4):177-186.
[7] 李勇，刘俊伟，戴木海，等.LZ91镁锂合金热变形的本构模型及微观组织演变[J].材料热处理学报，2021,42(10):167-174.LI Yong,LIU Jun-wei,DAI Mu-hai,et al.Constitutive model and microstructure evolution of LZ91 magnesium lithium alloy during hot deformation[J].Transactions of Materials and Heat treatment,2021,42(10):167-174.
[8] 赵阳，张丁非，冯靖凯，等.热处理对Mg-Zn-Mn-Gd合金显微组织和力学性能的影响[J].材料热处理学报，2020,41(9):36-41.ZHAO Yang,ZHANG Ding-fei,FENG Jing-kai,et al.Effect of heat treatment on microstructure and mechanical properties of Mg-Zn-Mn-Gd alloy[J].Transactions of Materials and Heat treatment,2020,41(9):36-41.
[9] 李龙，张磊，杨伟.Al对Mg-Zn-Y合金组织和拉伸性能的影响[J].材料热处理学报，2024,45(5):81-86.LI Long,ZHANG Lei,YANG Wei.Effect of Al on microstructure and tensile properties of Mg-Zn-Y alloy[J].Transactions of Materials and Heat treatment,2024,45(5):81-86.
[10] Zhang H F,Ding Y T,Li R M,et al.Enhanced strength-ductility synergy and activation of non-basal slip in as-extruded Mg-Zn-Ca alloy via heterostructure[J].Journal of Materials Research and Technology,2024,28:1841-1851.
[11] 张玉，李明，杨文龙，等.Mg-Zn系镁合金中G.P.区的研究进展[J].材料热处理学报，2020,41(9):30-35.ZHANG Yu,LI Ming,YANG Wen-long,et al.Research progress of G.P.zones of Mg-Zn series magnesium alloys[J].Transactions of Materials and Heat Treatment,2020,41(9):30-35.
[12] Wang L H,Jalar A,Dan L H.Dynamic precipitation and dynamic recrystallization behaviors of Mg-Gd-Nd-Zr magnesium alloy during thermal compression deformation[J].Journal of Materials Research and Technology,2023,26:7634-7648.
[13] Pei D,Yan L Y,Wang L,et al.Dynamic precipitation and twinning-induced dynamic recrystallization in Mg-6Al-3Sn-1Zn alloy during multi-pass high-speed rolling[J].Journal of Materials Research and Technology,2024,30:2200-2210.
[14] Li Z H,Sasaki T T,Uedono A,et al.Role of Zn on the rapid age-hardening in Mg-Ca-Zn alloys[J].Scripta Materialia,2022,216:114735.
[15] 刘洋，康锐，冯小辉，等.Mg-Al-Ca-Mn-Zn变形镁合金的组织和力学性能[J].材料研究学报，2022,36(1):13-20.LIU Yang,KANG Rui,FENG Xiao-hui,et al.Microstructure and mechanical properties of extruded Mg-alloy Mg-Al-Ca-Mn-Zn[J].Chinese Journal of Materials Research,2022,36(1):13-20.
[16] Pandey R,Gupta G,Pani S K,et al.Evolution of 3D microstructure and correlation with deformation behavior of as-cast Mg-4Zn-xCa alloys[J].Materials Letters,2024,367:136583.
[17] 徐世伟，胡楠，滕杰，等.SBF下镁锌钙合金耐蚀性能和耐磨性能研究[J].湖南大学学报(自然科学版),2023,50(12):138-146.XU Shi-wei,HU Nan,TENG Jie,et al.Study on corrosion resistance and friction and wear properties of Mg-Zn-Ca alloy under SBF[J].Journal of Hunan University (Natural Science Edition) 2023,50(12):138-146.
[18] Yu Q Q,Lyu S Y,Zhu G H,et al.Microstructure,mechanical properties and corrosion behavior of extruded Mg-Zn-Ca alloys with same Zn/Ca atomic ratio[J].Materials Today Communications,2024,39:108674.
[19] Feng X Y,Wang L F,Chen X,et al.Recent plastic technologies development of basal texture control to improve the property of wrought Mg alloys-a review[J].Journal of Materials Research and Technology,2025,34:1165-1190.
[20] Deng J F,Tian J,Zhou Y C,et al.Plastic deformation and fracture mechanisms of rolled Mg-8Gd-4Y-Zn and AZ31 magnesium alloys[J].Materials & Design,2022,223:111179.
[21] Yaghoobi M,Berman T,Allison J E.Effects of Zn and Ca on the deformation texture evolution of Mg-Zn-Ca alloys at elevated temperatures[J].Journal of Materials Research and Technology,2025,35:37-50.
[22] Xia N,Wang C,Gao Y P,et al.Enhanced ductility of Mg-1Zn-0.2Zr alloy with dilute Ca addition achieved by activation of non-basal slip and twinning[J].Materials Science and Engineering A,2021,813:141128.
[23] Zhang M Q,Nakata T,Xu C,et al.Role of Ca content on microstructure,mechanical properties and strain evolution of as-rolled Mg-Al-Ca-Zn-Mn alloy[J].Journal of Magnesium and Alloys,2024,16:40.
[24] Nakata T,Li Z H,Sasaki T T,et al.Room-temperature stretch formability,tensile properties,and microstructures of precipitation hardenable Mg-6Zn-0.2Ca (mass%) alloy sheets micro-alloyed with Ce or Y[J].Materials Science and Engineering A,2021,804:140563.
[25] Baek S M,Park H K,Yoon J I,et al.Effect of secondary phase particles on the tensile behavior of Mg-Zn-Ca alloy[J].Materials Science and Engineering A,2018,735:288-294.
[26] Matsuoka Y,Bian M Z,Huang X H,et al.Simulation-aided analysis on mechanical properties of dilute Mg-Zn-Ca alloy sheets[J].Journal of Alloys and Compounds,2022,906:164285.
[27] Xiao L,Peng P,Zhou S B,et al.Uncovering the synergistic role of trace Ca/Zn in weakening texture and elevating strength-ductility balance in dilute Mg-0.5Mn alloys[J].Journal of Alloys and Compounds,2025,1010:177629.
[28] Du Y Z,Qiao X G,Zheng M Y,et al.Effect of microalloying with Ca on the microstructure and mechanical properties of Mg-6 mass%Zn alloys[J].Materials & Design,2016,98:285-293.
[29] Zhang L,Deng K K,Nie K B,et al.Microstructures and mechanical properties of Mg-Al-Ca alloys affected by Ca/Al ratio[J].Materials Science and Engineering A,2015,636:279-288.
[30] Ding H L,Shi X B,Wang Y Q,et al.Texture weakening and ductility variation of Mg-2Zn alloy with Ca or RE addition[J].Materials Science and Engineering A,2015,645:196-204.
[31] Zhang Y,Feng X H,Huang Q Y,et al.Effect of the microstructure parameters on the corrosion characteristics of Mg-Zn-Ca alloy with columnar structure[J].Journal of Magnesium and Alloys,2023,11(5):1709-1720.
基本信息:
DOI：10.13289/j.issn.1009-6264.2025-0028
中图分类号:TG146.22
引用信息:
[1]李维,杜玉洲,郑琦,等.Zn和Ca复合添加对镁合金动态析出行为及强塑性的影响[J].材料热处理学报,2026,47(01):42-50.DOI:10.13289/j.issn.1009-6264.2025-0028.
基金信息:
陕西省自然科学基础研究计划(2023-JC-YB-293)
2026-01-25
2026-01-25