Enhancement of tensile properties by the solid solution strengthening of nitrogen in Zr-based metallic glass composites

被引：18

作者：

Cheng, J. L. ^{[1
,2
]}

Chen, G. ^{[3
]}

Zhao, W. ^{[1
,2
]}

Wang, Z. Z. ^{[1
,2
]}

Zhang, Z. W. ^{[4
]}

机构：

[1] Nanjing Inst Technol, Sch Mat Sci & Engn, Nanjing 211167, Jiangsu, Peoples R China

[2] Jiangsu Key Lab Adv Struct Mat & Applicat Technol, Nanjing 211167, Jiangsu, Peoples R China

[3] Nanjing Univ Sci & Technol, Engn Res Ctr Mat Behav & Design, Minist Educ, Nanjing 210094, Jiangsu, Peoples R China

[4] Harbin Engn Univ, Key Lab Superlight Mat & Surface Technol, Minist Educ, Harbin 150001, Heilongjiang, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 696卷

基金：

中国国家自然科学基金;

关键词：

Bulk amorphous alloys; Composites; Mechanical characterization; Plasticity; MECHANICAL-PROPERTIES; OXYGEN IMPURITY; ALLOYS; MICROSTRUCTURE; ADDITIONS;

D O I：

10.1016/j.msea.2017.04.075

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effects of nitrogen on both the glass forming ability (GFA) and mechanical properties of Zr-based bulk metallic glasses were studied experimentally. The results show that the doping of nitrogen could induce the precipitation of N-rich Zr3Ni-type crystals, and the precipitated crystals don't trigger heterogeneous nucleation. Therefore, the remainder molten metal contains very lower nitrogen content and keeps good glass formation ability. Based on this, using the precipitated beta-Zr(Ti, Nb) acted as a solid solvent for absorbed nitrogen, the optimum mechanical properties of bulk metallic glass composites can be obtained by doping an appreciate amount of nitrogen. This finding not only gives us a clue to avoid the detriment of light interstitial impurity to glass formation, but also opens a window to adjust the mechanical properties of the composites.

引用

页码：461 / 465

页数：5

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