XRD Characterization of Microstructural Evolution During Mechanical Alloying of W-20 wt%Mo

被引：0
|
作者：
Ajeet K. Srivastav
Anup M. Panindre
B. S. Murty
机构：
[1] Indian Institute of Technology Madras,Department of Metallurgical and Materials Engineering
[2] National Institute of Technology Jamshedpur,Department of Metallurgical and Materials Engineering
来源：
Transactions of the Indian Institute of Metals | 2013年 / 66卷
关键词：
Tungsten; Molybdenum; Mechanical alloying; X-ray diffraction line profile analysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The present paper reports a study on the microstructural evolution during mechanical alloying of W-20wt%Mo using XRD line profile analysis. The W-20wt%Mo powder blends were ball milled using Fritsch Pulverisette P-5 high energy ball mill for varying milling time (0, 5, 10, 15, 20 h) at 300 rpm with 10:1 and 2:1 ball to powder weight ratio. The crystallite size and lattice strain were calculated using Langford method (‘average’ Williamson-Hall Plot). The precision lattice parameter calculation was done using Nelson–Riley method. The effect of milling on alloying behaviour has been investigated using change in relative integrated intensity ratios (IMo/IW/W(Mo)) of (211) XRD peak. There was complete alloying in case of 10:1 ball to powder weight ratio, whereas half of the Mo (~10 % Mo) was alloyed with 2:1 ball to powder weight ratio. The paper also discusses the applicability of the criteria based on lattice parameter change (peak shift) for alloying behaviour during mechanical milling.
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页码：409 / 414
页数：5
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