Current assisted extrusion of metallic alloys: Insight into microstructure formation and mechanical properties

被引：10
|
作者：
Novitskaya, E. [1 ]
Esquivel-Castro, T. A. [2 ]
Dieguez-Trejo, G. R. [2 ]
Kritsuk, A. [1 ]
Cahill, J. T. [1 ]
Diaz-de-la-Torre, S. [2 ]
Graeve, O. A. [1 ]
机构：
[1] Univ Calif San Diego, Dept Mech & Aerosp Engn, 9500 Gilman Dr MC 0411, La Jolla, CA 92093 USA
[2] CIITEC, Inst Politecn Nacl, Cerrada Cecati S-N, Azcapotzalco 02250, Cdmx, Mexico
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2018年 / 717卷
基金：
美国国家科学基金会;
关键词：
Amorphous metal; SAM2; x; 5; Spark plasma extrusion; Microhardness; ZR65AL7.5NI10CU17.5 AMORPHOUS ALLOY; PHOSPHATE-BUFFERED SOLUTION; GLASS MATRIX COMPOSITES; CORROSION BEHAVIOR; POLARIZATION BEHAVIOR; IN-SITU; IRON; RESISTANCE; TEMPERATURE; STEEL;
D O I：
10.1016/j.msea.2018.01.076
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We present the devitrification behavior of an Fe-based amorphous metal (SAM2 x 5) during a current-assisted extrusion process. The alloy is of composition Fe49.7Cr17.7Mn1.9Mo7.4W1.6B15.2C3.8S12.4 and contains Y2O3 nanoparticles as a reinforcing phase. Detailed analysis of phase formation and microstructural analysis verifies that the SAM2 x 5 devitrified (SAM2 x 5-Dev) materials can be successfully extruded up to several centimeters in length with extrusion temperatures in the range between 1000 degrees C and 1100 degrees C. Subsequent analysis of mechanical properties via microhardness testing, together with microstructural characterization by scanning electron microscopy, demonstrates that the properties of the extruded SAM2 x 5-Dev composites significantly surpass those of common steels. These results open new horizons in the area of structural amorphous materials and expand their potential industrial processing.
引用
收藏
页码：62 / 67
页数：6
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