@article{oai:air.repo.nii.ac.jp:00001329,
 author = {武藤, 侃 and 川岸, 秀一朗 and 田上, 道弘 and MUTO, Akira and KAWAGISHI, Shuichiro and TAGAMI, Michihiro},
 issue = {1/2},
 journal = {素材物性学雑誌},
 month = {Dec},
 note = {For a further understanding of high temperature tensile-deformation behavior
of a Cu-30 mass% Zn binary alloy depending on the strain rate, the structure
and the stress-strain curves were investigated in detail, at 673K, using a salt
bath (NaNO,: KN03 = 1: 1) under a strain rate range from 3.3x 10- 5 to 2.0x
1O- 1s- 1
• Specimens with three grain sizes ranging from 0.012 to 0.045 mm diameter
were used. When dynamic recrystallization occurred at 673 K, the stress
decreased. After the initial grain shape changed to dynamic recrystallization,
the stress-strain curves showed a steady state, and did not depend on the occurrence
or the growth of voids. The peak strain, which is the strain at maximum
stress, was hardly dependent on the size of the initial grain, but dependent on
the strain rate. Thus, the peak strain increases with strain rate. At this time,
the dynamic recrystallization form is a bulging mechanism and simultaneously,
a nucleation mechanism. This occurrence happened at about 20-30% peak
strain. Initial void formation depended on the strain rate. And the strain
appearing void increased with increased in strain rate. Cavities of fractured
specimens showed 4 different shapes in three dimensions which corresponded to
initial grain size and strain rate. Fractured elongation reveals a tendency to
become smaller, when cavities start to combine and grow into a45degree angle
in relate to the tensile direction. On the other hand, the specimens exhibit large
elongation, when cavi ties combine and grow in the tensile direction.},
 pages = {72--87},
 title = {70-30黄銅の温度673Kにおける破断伸びと変形組織の関係},
 volume = {12},
 year = {1999}
}