3D printing of Fe-based bulk metallic glasses and composites with large dimensions and enhanced toughness by thermal spraying

被引：64
|
作者：
Zhang, Cheng [1 ]
Wang, Wei [1 ]
Li, Yi-Cheng [1 ]
Yang, Yan-Ge [2 ]
Wu, Yue [3 ]
Liu, Lin [1 ]
机构：
[1] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Sch Mat Sci & Engn, Wuhan 430074, Hubei, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, Lab Corros & Protect, Shenyang 110016, Liaoning, Peoples R China
[3] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA
来源：
JOURNAL OF MATERIALS CHEMISTRY A | 2018年 / 6卷 / 16期
基金：
中国国家自然科学基金;
关键词：
MECHANICAL-PROPERTIES; FRACTURE-TOUGHNESS; HIGH-STRENGTH; STEEL;
D O I：
10.1039/c8ta00405f
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Large sized Fe-based bulk metallic glasses (BMGs) and BMG/stainless steel (SS) composites with excellent mechanical properties were successfully fabricated using a thermal spray three-dimensional (3D) printing (TS3DP) technique. The 3D-printed BMG and BMGC (reinforced with 50% SS powder) parts exhibited high fracture strength (similar to 2 GPa) and fairly good fracture toughness (13-21 MPa m(1/2), which is 200-400% greater than that of the as-cast BMG of the same composition). The enhanced fracture toughness originates from the intrinsically layered structure of the 3D-printed BMG components, which caused crack deflection and thus the increase of energy dissipation during crack propagation. The TS3DP technique developed in this work opens up a new avenue for the production of BMGs and BMG composites of theoretically limitless size, and facilitates their application as structural and functional materials.
引用
收藏
页码：6800 / 6805
页数：6
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