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
收藏
页码：1101 / 1104
页数：4
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