Estimation of three-dimensional mean dihedral angle in a W-Ni-Fe alloy liquid-phase sintered in imicrogravity

被引：2

作者：

Goodwin, W. B. ^{[2
]}

Bharadwaj, M. ^{[3
]}

Mao, Y. ^{[1
]}

Gokhale, A. M. ^{[1
]}

Gurumurthy, A. ^{[1
]}

German, R. M. ^{[4
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[2] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[3] Univ Idaho, Dept Mat Sci & Engn, Moscow, ID 83844 USA

[4] San Diego State Univ, Coll Engn, San Diego, CA 92812 USA

来源：

SCRIPTA MATERIALIA | 2009年 / 61卷 / 12期

基金：

美国国家科学基金会;

关键词：

Liquid-phase sintering; Image analysis; Powder processing; Dihedral angle; Tungsten heavy alloys; STEREOLOGY;

D O I：

10.1016/j.scriptamat.2009.08.043

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The three-dimensional mean dihedral angle of impinging W grains is estimated in a 50 wt.% W-35 wt.% Ni-15 wt.% Fe alloy liquid-phase sintered in microgravity at 1500 degrees C for times ranging from 1 to 600 min using unbiased stereology and automated image analysis. The estimated mean dihedral angles are in the range 50 +/- 3 degrees. The mean dihedral angle does not vary significantly with the liquid-phase sintering time, although the mean intercept size of the W grains increases almost by a factor of 5. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1101 / 1104

页数：4

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