Powder-Route Synthesis and Mechanical Testing of Ultrafine Grain Tungsten Alloys

被引：23

作者：

Cordero, Zachary C. ^{[1
]}

Huskins, Emily L. ^{[2
]}

Park, Mansoo ^{[1
]}

Livers, Steven ^{[3
]}

Frary, Megan ^{[3
]}

Schuster, Brian E. ^{[4
]}

Schuh, Christopher A. ^{[1
]}

机构：

[1] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

[2] Army Res Lab, Oak Ridge Inst Sci & Educ, Postdoctoral Fellowship Program, Aberdeen Proving Ground, MD 21005 USA

[3] Boise State Univ, Dept Mat Sci & Engn, Boise, ID 83725 USA

[4] Army Res Laboratory, Expt & Computat Penetrat Mech Team, Weap & Mat Res Directorate, Adelphi, MD USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2014年 / 45A卷 / 08期

关键词：

PLASMA PRESSURE COMPACTION; REFRACTORY-METALS; NANOCRYSTALLINE; SIZE; BEHAVIOR; HARDNESS; DRAWN; RECRYSTALLIZATION; MICROSTRUCTURE; DEFORMATION;

D O I：

10.1007/s11661-014-2286-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a W-rich alloy (W-7Cr-9Fe, at. pct) produced by high-energy ball milling, with alloying additions that both lower the densification temperature and retard grain growth. The alloy's consolidation behavior and the resultant compacts' microstructure and mechanical properties are explored. Under one condition, a 98 pct dense compact with a mean grain size of 130 nm was achieved, and exhibited a hardness of 13.5 GPa, a dynamic uniaxial yield strength of 4.14 GPa in Kolsky bar experiments, and signs of structural shear localization during deformation.

引用

页码：3609 / 3618

页数：10

共 58 条

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