Strengthening effects in press forged KCl
作者:
P. F. Becher,
R. W. Rice,
期刊:
Journal of Applied Physics
(AIP Available online 1973)
卷期:
Volume 44,
issue 6
页码: 2915-2916
ISSN:0021-8979
年代: 1973
DOI:10.1063/1.1662677
出版商: AIP
数据来源: AIP
摘要:
Recrystallization of KCl crystals deformed in a <100> direction was utilized to develop polycrystalline microstructures, increasing yield stresses, thus making them more attractive as laser window candidates. Using press forging techniques (i.e., slow compressive deformation in the absence of lateral constraints), large plastic strains (≤ 70%) were achieved at temperatures as low as 150 °C, which resulted in recrystallized grain sizes as fine as 5 &mgr;m. Although a residual < 100 > texture was present, there was sufficient grain misorientation to result in general polycrystalline behavior. The yield stresses of the press forged materials increased with decreasing grain size, reaching about 35 MN m−2(∼5000 psi) at the finest (5 &mgr;m) grain size.
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