RECRYSTALLIZATION MECHANISMS IN A CU-CR-ZR ALLOY WITH A BIMODAL DISTRIBUTION OF PARTICLES

被引：47

作者：

MORRIS, MA

LEBOEUF, M

MORRIS, DG

机构：

[1] Institute of Structural Metallurgy, University of NeuchâNeuchâtel

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1994年 / 188卷 / 1-2期

关键词：

D O I：

10.1016/0921-5093(94)90380-8

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influence of the initial particle distributions on the recrystallization kinetics of a copper alloy containing two types of particles was studied. Comparisons were made between the softening rates during isothermal anneals at temperatures ranging between 500 degrees C and 700 degrees C. Microstructural studies of annealed bulk samples were carried out by scanning and transmission electron microscopies. The mechanism of grain formation seems to be independent of the particle distribution and involves reorientation of the deformation cells into subgrains and into well defined grains by rearrangement of dislocations in the cell walls. The mechanism of recrystallization can be seen as a compromise between the differing behaviours of fine and coarse dispersoid particles of the alloys, in which recrystallization is initiated at large particles for sufficiently high temperatures, but is gradually suppressed by the influence of the fine particles as the annealing temperature is decreased.

引用

页码：255 / 265

页数：11

共 19 条

[1]

[Anonymous], 1948, T METALL SOC AIME

[2]

BENEDEKE RW, 1974, THESIS U SUSSEX

[3] THE RECRYSTALLIZATION OF ALUMINIUM-SILICON ALLOYS CONTAINING A BIMODAL PARTICLE DISTRIBUTION [J].