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

页码：6800 / 6805

页数：6

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