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Grain Size Distribution and the Related Plastic Flow in Engineering Metallic Materials

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 32 Issue 1 Page 9-17
published_at 1981
KJ00000156382.pdf
[fulltext] 716 KB
Title
実用機械材料の結晶粒分布と塑性変形挙動について
Grain Size Distribution and the Related Plastic Flow in Engineering Metallic Materials
Creators Takimoto Akio
Creators Touge Mutsumi
Creators Yamaguchi Morie
Creators Nai Masami
Creators Yoshimura Shigemitsu
Creators Tochino Takafumi
Source Identifiers
The distribution functions of grain sizes are determined for engineering sheet materials of 6-4 brass, copper, SS-41 and aluminum with a sufficient accuracy. Statistical variables of a mode, a median and a standard deviation are determined in addition to a mean. Flow stress is found not necessarily to obey the Hall-Petch relationship in all ranges of plastic strain and the mean grain size employed here except the results in 6-4 brass. The strain hardening exponent (n) increases in a parabolic way as the mean grain diameter increases. The dependence of strength and ductility on the strain rate is shown and the n-value increases as the strain rate increases in SS-41. Variation of the n-value with respect to the width to thickness ratio of a specimen is also discussed for copper.
Subjects
機械工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1981
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部