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Interparticle bonding and interfacial nanocrystallization mechanisms in additively manufactured bulk metallic glass fabricated by cold spray
被引:22
作者:
Fan, Ningsong
[1
]
Huang, Chunjie
[2
]
Wang, Zhongyu
[1
]
Yu, Pengfei
[1
]
Chen, Wen
[3
]
Lupoi, Rocco
[1
]
Xie, Qingge
[4
]
Liu, Lin
[5
]
Yin, Shuo
[1
]
机构:
[1] Univ Dublin, Trinity Coll Dublin, Dept Mech Mfg & Biomed Engn, Parsons Bldg, Dublin 2, Ireland
[2] Univ Fed Armed Forces Hamburg, Helmut Schmidt Univ, Inst Mat Technol, D-22043 Hamburg, Germany
[3] Univ Massachusetts, Dept Mech & Ind Engn, Amherst, MA 01003 USA
[4] Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol, Beijing 100083, Peoples R China
[5] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
基金:
中国国家自然科学基金;
美国国家科学基金会;
关键词:
Cold spray;
Additive manufacturing;
Bulk metallic glass (BMG);
Bonding mechanism;
Nanocrystallization;
AMORPHOUS NITIZRSISN;
DEPOSITION BEHAVIOR;
SHEAR BANDS;
ZR;
DEFORMATION;
CRYSTALLIZATION;
ALLOY;
MICROSTRUCTURE;
SUBSTRATE;
PHASE;
D O I:
10.1016/j.addma.2022.103057
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Amorphous Zr-based bulk metallic glass deposit was produced by cold spray additive manufacturing. The bonding mechanism of metallic glass particles was systematically investigated through studying the deformation behavior of individual particles after deposition. We revealed two collective particle bonding mechanisms that contributed to the formation of metallic glass deposits, i.e., high-velocity impact induced localized metallurgical bonding at the fringe of the interface, and high particle temperature induced viscosity reduction and the resultant annular metallurgical bonding band. Moreover, the dynamic evolution mechanism of the amorphous phase into nanocrystal structures at severely deformed interfacial regions during cold spray was carefully investigated. For the first time, we observed different amorphous/nanocrystal structures in cold sprayed metallic glass deposits, which can represent different evolution stages in nanocrystallization process. Based on the observation, it is inferred that the nanocrystallization process can be divided into following three stages: composition segregation, the formation of ordered 1D and 2D transition structures, and 3D nanocrystals. The current study provides new insights into the bonding mechanisms and the mechanistic nanocrystallization origins in cold sprayed bulk metallic glass deposits.
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页数:11
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