Effects of Heat Treatment on Microstructure and Properties of Mg-Gd-Y-Zn-Ti Alloy

Zhi Xuanle; Ding Zhibing; Zhang Shuai; Guo Wenmin; Cheng Dongrui

doi:10.15980/j.tzzz.2024.03.019

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Effects of Heat Treatment on Microstructure and Properties of Mg-Gd-Y-Zn-Ti Alloy
Vol. 44, Issue 3, Pages: 392-397(2024)
Published： 20 March 2024 ，
DOI： 10.15980/j.tzzz.2024.03.019

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郅玄乐，丁志兵，张帅，等. 热处理对Mg-Gd-Y-Zn-Ti合金微观组织和性能的影响［J］. 特种铸造及有色合金，2024，44（3）：392-397.

ZHI X L， DING Z B， ZHANG S， et al.Effects of heat treatment on microstructure and properties of Mg-Gd-Y-Zn-Ti alloy［J］.Special Casting & Nonferrous Alloys，2024，44（3）：392-397.
郅玄乐，丁志兵，张帅，等. 热处理对Mg-Gd-Y-Zn-Ti合金微观组织和性能的影响［J］. 特种铸造及有色合金，2024，44（3）：392-397. DOI： 10.15980/j.tzzz.2024.03.019.

ZHI X L， DING Z B， ZHANG S， et al.Effects of heat treatment on microstructure and properties of Mg-Gd-Y-Zn-Ti alloy［J］.Special Casting & Nonferrous Alloys，2024，44（3）：392-397. DOI： 10.15980/j.tzzz.2024.03.019.

摘要

以铸态、固溶态和时效态 Mg-Gd-Y-Zn-Ti稀土镁合金为对象，采用X射线衍射仪（XRD）、扫描电镜（SEM）以及电子拉伸试验机分析了热处理对 Mg-12Gd-

Y-1Zn-0.6Ti（质量分数，%）合金（

=0，0.4，0.8，1.2，%）的微观组织、微区成分、物相组成以及力学性能的影响。结果表明，铸态Mg-12Gd-

Y-1Zn-0.6Ti合金中存在LPSO相，且LPSO相为Mg

（Zn，Y）。添加0.8%的Y的合金力学性能最优，其抗拉强度为222 MPa，屈服强度为149 MPa，伸长率为3.76%。固溶处理后力学性能得到了一定的提升，抗拉强度达到了272 MPa，屈服强度达到了188 MPa，伸长率达到了5.4%。加Y合金的峰时效响应强烈，峰时效态Mg-12Gd-1Zn-0.6Ti-0.8Y合金的力学性能最佳，其抗拉强度达到了388 MPa，屈服强度为267 MPa，伸长率为6.44%。

Abstract

Effects of heat treatment on microstructure， micro-composition， phase composition and mechanical properties of Mg-12Gd-

Y-1Zn-0.6Ti alloy （

=0，0.4，0.8，1.2，%） were analyzed at as-cast， solid solution and aged treatment by X-ray diffractometer （XRD）， scanning electron microscopy （SEM） with energy spectrum and electron tensile testing machine.The results indicate that LPSO phase is present in as-cast Mg-12Gd-

Y-1Zn-0.6Ti alloy，which is composed of Mg

（Zn，Y）. The mechanical properties of alloy with 0.8% Y is desirable，where the tensile strength， yield strength and elongation reach 222 MPa， 149 MPa， and 3.76%， respectively.The mechanical properties of alloy after solution treatment are improved to a certain extent，where the tensile strength， yield strength and elongation reach 272 MPa， 188 MPa， and 5.4%， respectively.The peak aging response of alloy with Y addition is strong， and the mechanical properties of peak-aged Mg-12Gd-0.8Y-1Zn-0.6Ti are desirable，where the tensile strength reach yield strength and elongation are 388 MPa， 267 MPa and 6.44%， respectively.

关键词

Mg-Gd-Y-Zn-Ti合金稀土镁合金热处理力学性能

Keywords

Mg-Gd-Y-Zn-Ti AlloyRare Earth Magnesium AlloysHeat TreatmentMechanical Properties

references

王丽娟，牛瑞利. Zn添加对挤压态Mg-Al-Ca-Mn合金微观组织和力学性能的影响［J］. 精密成形工程， 2021， 13（4）： 139-143.

尚会会，曹富荣，项超. 镁合金超塑性研究进展［J］. 精密成形工程， 2020， 12（5）： 111-116.

LI B G， WANG Y S， JIANG J， et al. Microstructure and mechanical properties of extruded Mg-Y-Zn （Ni） alloys ［J］. Journal of Alloys and Compounds， 2021， 881： 160 577.

YU Z J， XU C， MENG J， et al. Effects of extrusion ratio and temperature on the mechanical properties and microstructure of as-extruded Mg-Gd-Y-（Nd/Zn）-Zr alloys［J］. Materials Science and Engineering， 2019， A762： 138 080.

ZHANG Z Q， LIU X， HU W Y， et al. Microstructures， mechanical properties and corrosion behaviors of Mg-Y-Zn-Zr alloys with specific Y/Zn mole ratios［J］. Journal of Alloys and Compounds， 2015，624：116-125.

LI C Q， XU D K， ZENG Z R， et al. Effect of volume fraction of LPSO phases on corrosion and mechanical properties of MgZn-Y alloys［J］.Materials and Design， 2017，121 ：430-441.

DING Z B， ZHANG S， ZHAO Y H， et al. Effect of Al addition on microstructure and mechanical properties of Mg-Gd-Zn alloys ［J］. Transactions of Nonferrous Metals Society of China， 2022， 32（3）： 824-837.

LIU W， ZHANG J S， XU C X， et al. High-performance extruded Mg89Y4Zn2Li5 alloy with deformed LPSO structures plus fine dynamical recrystallized grains［J］. Materials and Design，2016，110：1-9.

LIU Y， LIU X Q， LIU Z L，et al. The microstructure and mechanical properties of as-cast Mg-4Y/Nd-2Zn alloys［J］.Materials Science and Technology，2018，34（9）： 1 142-1 147.

DING Z， LU R， ZHAO Y， et al. The microstructure and mechanical properties of as-cast Mg-10Gd-3Y-xZn-0.6Zr （x=0，0.5，1 and 2） alloys ［J］. Materials Research-Ibero-americal Journal of Matericals， 2018， 21（5）： 20 170 992.

BIAN L P， WANG L P， ZHOU Y Y， et al. Effects of different amounts of AlCa2 addition on the microstructure and mechanical properties of Mg-Gd-Zn alloy ［J］. Materials Science and Engineering， 2017， A698： 12-17.

FANG C F， LIU G X， LIU X T， et al. Significant texture weakening of Mg-8Gd-5Y-2Zn alloy by Al addition ［J］. Materials Science and Engineering， 2017， A701： 314-318.

HONMA T， OHKUBO T， KAMADO S， et al. Effect of Zn additions on the age hardening of Mg-2.0Gd-1.2Y-0.2Zr alloys ［J］. Acta Materialia， 2007， 55： 4 137-4 150.

WANG J F， WANG K， HOU F， et al. Enhanced strength and ductility of Mg-RE-Zn alloy simultaneously by trace Ag addition ［J］. Materials Science and Engineering， 2018， A728： 10-19.

SHAO X H， YANG Z Q， MA X L. Strengthening and toughening mechanisms in Mg-Zn-Y alloy with a long period stacking ordered structure ［J］. Acta Materialia， 2010， 58： 4 760-4 771.

YASUMASA C， MAMORU M，SHIGEHIRO H，et al.Novelequilibrium two phase Mg alloy with the long period ordered structure ［J］ . Scr. Mater.， 2004 ， 51：711-714．

LIAO H， KIM J， LEE T， et al. Effect of heat treatment on LPSO morphology and mechanical properties of Mg-Zn-Y-Gd alloys［ J］ . Journal of Magnesium and Alloys，2020，8（4）： 1 120-1 127.

丁科迪. 热处理工艺对Mg-Gd-Y（-Zn）-Zr合金组织及力学性能的影响［D］. 哈尔滨：哈尔滨工业大学，2017.

SANDLÖBES S， FRIÁK M， ZAEFFERER S， et al. The relation between ductility and stacking fault energies in Mg and Mg-Y alloys［J］.Acta Materialia，2012，37：357-361.

LU R P， WANG J F， CHEN Y L， et al. Effects of heat treatment on the morphology of long-period stacking ordered phase， the corresponding damping capacities and mechanical properties of Mg-Zn-Y alloys［J］. Journal of Alloys and Compounds，2015，639： 541-546.

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