文献详情
Preparation of bulk metallic glasses by modifying local structure of icosahedral quasicrystals
文献类型：期刊
通讯作者：Wang, LM (reprint author), Yanshan Univ, Key Lab Microstruct Mat Phys Hebei Prov, Coll Mat Sci & Engn, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China.
期刊名称：INTERMETALLICS影响因子和分区
年：2019
卷：109
页码：97-104
ISSN：0966-9795
关键词：Metallic glass; Quasicrystal; Icosahedral short range order; Ab initio molecular dynamic simulations
所属部门：物理学系
摘要：An attempt is carried out to design metallic glasses by modifying the local structure of icosahedral quasicrystals. A series of metallic glasses are prepared by introducing beryllium to the quasicrystal former, Zr40Ti40Ni20, and the maximum diameter of the glasses reaches 20 mm. A phase transformation diagram is constructed for the alloys of (Zr40Ti40Ni20)(100-x)Be-x, revealing the transition from stable crystal to quasicrystal and then to metallic glasses with the increased Be content. This stu ...More
An attempt is carried out to design metallic glasses by modifying the local structure of icosahedral quasicrystals. A series of metallic glasses are prepared by introducing beryllium to the quasicrystal former, Zr40Ti40Ni20, and the maximum diameter of the glasses reaches 20 mm. A phase transformation diagram is constructed for the alloys of (Zr40Ti40Ni20)(100-x)Be-x, revealing the transition from stable crystal to quasicrystal and then to metallic glasses with the increased Be content. This study shows a connection between the formation of metallic glasses and the specific thermodynamics of the initially precipitated quasicrystals. Interestingly, both improvements in the forming ability for glasses and quasicrystals are observed over a wide composition range. Ab initio molecular dynamic simulations show the evolution of the structural features of the metallic melts for the optimised glass forming region, which guarantee the primary precipitation of quasicrystal. ...Hide

DOI：10.1016/j.intermet.2019.03.007
百度学术：Preparation of bulk metallic glasses by modifying local structure of icosahedral quasicrystals
语言：外文
基金：National Basic Research Program of ChinaNational Basic Research Program of China [2015CB856805]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China [51871193,11474247]; Natural Science Foundation of Hebei ProvinceNatural Science Foundation of Hebei Province [E2015203200, A2014203260]
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