清水一郎

JaLCDOI	10.18926/46995
フルテキストURL	mfe_36_1_001_006.pdf
著者	Kondou, Ryouji\| Abe, Takeji\| Tada, Naoya\| Shimizu, Ichiro\|
抄録	Change in crystal orientation and strain of individual grains during tensile plastic deformation are studied to clarify on the microscopic deformation behavior of polycrystalline copper. The orientation of grain is measured by electron backscatter diffraction (EBSD) technique in the scanning electron microscope. The principal strain of grain is also measured by obtaining the approximated ellipse of strain distribution. The deformation of grains dependent on their initial orientation and the rotation of the principal strain during uniaxial tension are clarified.
キーワード	Polycrystalline Copper Plastic Deformation SEM EBSD Method Grain Orientation Crystal Orientation Map
出版物タイトル	Memoirs of the Faculty of Engineering, Okayama University
発行日	2001-12
巻	36巻
号	1号
開始ページ	1
終了ページ	6
ISSN	0475-0071
言語	英語
論文のバージョン	publisher
NAID	120003497021

JaLCDOI	10.18926/15344
フルテキストURL	Mem_Fac_Eng_OU_35_1.pdf
著者	阿部武治\| Hualin Song\| Akagi Yasuo\| 清水一郎\|
抄録	Free surface of polycrystalline metal becomes roughened after plastic deformation. The surface roughening is closely related to the inhomogeneity of polycrystalline metals, that is, to the inhomogeneous plastic deformation of respective grains. In the present study, inhomogeneous deformation on the free surface of polycrystalline aluminum specimen during uniaxial tension is studied. The inhomogeneous deformation of grains in the central area of the free surface of specimen is observed by the laser scanning microscope, while the inhomogeneous deformation perpendicular to the surface is studied by the laser scanning microscope as well as the stylus measuring instrument. It is shown that the surface roughness and the strain of respective grains increase with the applied strain. Discussions are made on the change in the surface roughness, the strain in each grain and the slip-line angles with the applied strain.
出版物タイトル	Memoirs of the Faculty of Engineering, Okayama University
発行日	2001-03-27
巻	35巻
号	1-2号
開始ページ	1
終了ページ	8
ISSN	0475-0071
言語	英語
論文のバージョン	publisher
NAID	120002307340

JaLCDOI	10.18926/14135
フルテキストURL	Mem_Fac_Eng_39_1_7.pdf
著者	王暁群\| 阿部武治\| 多田直哉\| 清水一郎\|
抄録	Roughening on free surface of polycrystalline metal during plastic deformation is closely related to the inhomogeneous deformation in the respective grain at the surface. Uniaxial tensile tests are carried out on annealed pure aluminum sheet specimens with various averaged grain sizes. The roughening is measured by a 3-dimensional stylus instrument to examine the roughness change in both sides of specimen surfaces at each strain. The irregularities on one side are reversed on the backside, when the averaged grain size is as large as the thickness of the specimen. Discussions are made on the relation between the surface shapes of both sides adopting the cross correlation factor. The strains of respective grains are also measured from the grain boundary shape before and after plastic deformation. There are some deviations in the strains of the grains and their standard deviation increases with the applied strain.
出版物タイトル	Memoirs of the Faculty of Engineering, Okayama University
発行日	2005-01
巻	39巻
号	1号
開始ページ	7
終了ページ	15
ISSN	0475-0071
言語	英語
論文のバージョン	publisher
NAID	120002308149

清水 一郎