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

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

机构地区：[1]Institute for Advanced Materials,North China Electric Power University,Beijing 102206,China [2]Songshan Lake Materials Laboratory,Dongguan 523808,China [3]Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Journal of Materials Science & Technology》2024年第3期177-185,共9页材料科学技术（英文版）

基　　金：supported by the National Key Research and Development Plan(Grant Nos.2018YFA0703603,2021YFA0716302);Guangdong Major Project of Basic and Applied Basic Research,China(Grant Nos.2019B030302010,2020B1515120092);Guangdong Basic and Applied Basic Research Foundation,China(Grant Nos.2020B1515120092,2019B030302010);the National Natural Science Foundation of China(Grant Nos.52192602,52192603,51971092,11790291,and 61888102);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB30000000).

摘　　要：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 hardening 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 investigated 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 theβ-phase is generally larger.Insitu BMGCs with the composition of Ti_(48)Zr_(20)(V_(12/17)Cu_(5/17))19 Be 13 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 ofβphase stays below 62%±2%;(2)The equiaxed crystals with a more uniform size in the range of 5-10μm.Meanwhile,the results of the present study provided guidance for developing BMGCs with good ductile properties under industrial conditions.

关 键 词：Vacuum die casting Bulk metallic glass composites Mechanical properties β-phase 

分 类 号：TG1[金属学及工艺—金属学]