METASTABLE BCC PHASE-FORMATION IN THE NB-CR SYSTEM

被引：13

作者：

THOMA, DJ

PEREPEZKO, JH

PLANTZ, DH

SCHWARZ, RB

机构：

[1] US COAST GUARD ACAD,DEPT ENGN,NEW LONDON,CT 06320

[2] UNIV WISCONSIN,DEPT MAT SCI & ENGN,MADISON,WI 53706

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1994年 / 179卷

关键词：

D O I：

10.1016/0921-5093(94)90188-0

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Extended metastable b.c.c. solid solutions of Nb-Xat.%Cr (X= 35, 50, 57, 77, 82 and 94) were synthesized by two-anvil splat-quenching. In addition, b.c.c. Nb-67at.%Cr was prepared by mechanically alloying mixtures of niobium and chromium powders. The lattice parameters were measured by X-rav diffraction and the Young's moduli by low load micro-indentation. The composition dependence of the lattice parameters and elastic moduli shows a positive deviation with respect to a rule of mixtures. During continuous heating at 15-degrees-C min-1, the metastable precursor b.c.c. phases decomposed at temperatures above 750-degrees-C to uniformly refined microstructures.

引用

页码：176 / 180

页数：5

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