首页|High-tenacity in-situ Ti/Zr-based bulk metallic glasses composites fabricated by industrial high-pressure die casting

High-tenacity in-situ Ti/Zr-based bulk metallic glasses composites fabricated by industrial high-pressure die casting

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The glass-forming ability and mechanical properties of metallic glasses and their composites are well known to be sensitive to the preparation conditions and are highly deteriorated by industrial preparing conditions such as low-purity raw materials and low vacuum.Here,we showed that a series of in-situ bulk metallic glass composites(BMGCs)which exhibit excellent ductility and segmental work harden-ing were successfully developed utilizing a high vacuum high-pressure die casting(HV-HPDC)technology along with industrial-grade raw materials.The tensile properties of these BMGCs are systematically inves-tigated and correlated with the alloy microstructure.As compared with the copper mold suction casting method,the volume fraction difference of the dendrite phase for the BMGCs with the same composition is not significant when fabricated by the HV-HPDC,whereas the size of the β-phase is generally larger.In-situ BMGCs with the composition of Ti48Zr20(V12/17Cu5/17)19Be13 obtained by the HV-HPDC process show ductility up to 11.3％under tension at room temperature and exhibit a certain amount of work hardening.Two conditions need to be met to enable the BMGCs,which are prepared by vacuum die-casting to retain favorable ductility:(1)The volume fraction of β phase stays below 62％±2％;(2)The equiaxed crystals with a more uniform size in the range of 5-10 µm.Meanwhile,the results of the present study provided guidance for developing BMGCs with good ductile properties under industrial conditions.

Vacuum die castingBulk metallic glass compositesMechanical propertiesβ-phase

Yang Li、Wenbo Luo、Ying Jin、Zhiyong Xue、Guiqing Wang、Yanan Ren、Haoxin Li、Haibo Ke、Baoan Sun、Weihua Wang

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Institute for Advanced Materials,North China Electric Power University,Beijing 102206,China

Songshan Lake Materials Laboratory,Dongguan 523808,China

Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

国家重点研发计划国家重点研发计划Guangdong Major Project of Basic and Applied Basic Research,ChinaGuangdong Major Project of Basic and Applied Basic Research,ChinaGuangdong Basic and Applied Basic Research FoundationGuangdong Basic and Applied Basic Research Foundation国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金中国科学院战略规划重点项目

2018YFA07036032021YFA07163022019B0303020102020B15151200922020B15151200922019B0303020105219260252192603519710921179029161888102XDB30000000

2024

10.1016/j.jmst.2023.06.025

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.170(3)
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