Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Hiroaki Ohfuji"'
Autor:
Masafumi Matsushita, Ryohei Waki, Michiaki Yamasaki, Kohtaro Masuda, Yuji Higo, Yoshihito Kawamura, Hiroaki Ohfuji
Publikováno v:
Journal of Alloys and Compounds. 784:1284-1289
Under high-temperature and high-pressure conditions, the long-period stacking-ordered structure in Mg85Y9Zn6 transforms to a dual-phase structure consisting of a hexagonal close-packed lattice and a face-centered cubic lattice. After further solidifi
Publikováno v:
Journal of the Society of Materials Science, Japan. 67:568-573
Publikováno v:
Journal of Japan Institute of Light Metals. 67:361-366
Autor:
Michiaki Yamasaki, Masahiro Fukuda, Masafumi Matsushita, Hiroaki Ohfuji, Teruki Tsuchiya, Yoshihito Kawamura
Publikováno v:
Journal of Alloys and Compounds. 844:155972
A Mg80Yb12Cu8 (CY) phase was found in a Mg97Yb2Cu1 alloy quenched after being annealed at 873 K for 10 min; the unit cell dimensions of the CY phase are described as 4 3 × 4 3 × 2 with respect to those of the original hcp-Mg lattice. The a-axis lat
Publikováno v:
Metallurgical and Materials Transactions A. 46:1597-1609
The effects of microstructural characteristics (secondary dendrite arm spacing, SDAS) and Si- and Fe-based eutectic structures on the mechanical properties and failure behavior of an Al-Si-Cu alloy are investigated. Cast Al alloy samples are produced
Autor:
Hiroaki Ohfuji, Takafumi Hiramoto, Tatsuaki Sakamoto, Sengo Kobayashi, Kiyomichi Nakai, Tetsuo Irifune
Publikováno v:
QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY. 33:71s-74s
Whether dislocation network could be introduced into austenite (γ) even during austenitization or not was analyzed by optical microscopy. Austenitization at 1450°C for 300s dissolves MnS completely into γ. It is clarified that isothermal holding a
Publikováno v:
Metallurgical and Materials Transactions A. 45:5767-5776
The mechanical properties and failure characteristics of a cast Mg alloy (AZ91: Mg-Al8.9-Zn0.6-Mn0.2) produced by a heated-mold continuous casting process (HMC) are investigated. In a modification of the original HMC process, the cooling of the liqui
Publikováno v:
Materials Science and Engineering: A. 592:189-200
The effects of microstructural characteristics on the mechanical properties of an aluminum alloy (ADC12: Al–Si 11.3 –Cu 1.9 –Zn 0.8 –Fe 0.8 –Mg 0.2 –Mn 0.2 ) produced by various casting technologies are studied experimentally and numerica
Publikováno v:
Journal of Materials Science. 48:6157-6166
In situ measurements of the strain-induced martensitic transformation (SMTs) of SUS304 stainless steel that takes place during tensile loading at room temperature were performed around the notch of a dumbbell-shaped specimen where high stress concent
Autor:
Satoshi Takasu, Y. Ohkura, Tetsuro Shiraishi, Shuhei Takeuchi, Mitsuhiro Okayasu, Hiroaki Ohfuji
Publikováno v:
Materials Science and Engineering: A. 543:185-192
The mechanical properties of an Al–Si–Cu alloy (ADC12), produced using various casting technologies, have been examined experimentally. Four different casting processes were employed, including gravity casting (GC), cold-chamber die-casting (CD),