Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Fracture (geology)"'
Effect of Pre-Deformation on Fracture Behavior Transition due to Strain-Rate Change in Fe-5%Si Alloy
Publikováno v:
Journal of the Society of Materials Science, Japan. 63:467-472
Autor:
Takashi Nakamura, Hiroyuki Oguma
Publikováno v:
Journal of the Society of Materials Science, Japan. 60:1066-1071
In the very high cycle regime over 107 cycles, a fatigue crack often initiates from subsurface of materials. In subsurface fractures, a unique fracture surface with a fine concavo-convex pattern called Optically Dark Area (ODA) is known to exist arou
Publikováno v:
Journal of the Society of Materials Science, Japan. 60:1072-1078
To determine the influential factors on the formation of initial crack propagation region in the very high cycle fatigue (VHCF), uniaxial fatigue tests and K-decreasing tests were conducted with Ti-6Al-4V alloy. The test data indicated that the crack
Publikováno v:
Journal of the Society of Materials Science, Japan. 58:235-242
Extruded magnesium alloy shows a mechanical anisotropy caused by the particular deformation characteristics of the hexagonal crystal structure. Cyclic deformation behavior and fatigue life of the extruded AZ61 and AZ80 alloys were investigated in the
Publikováno v:
Journal of the Society of Materials Science, Japan. 57:913-920
Publikováno v:
Journal of the Society of Materials Science, Japan. 54:1206-1212
Ultrasonic fatigue tests were conducted with the specimens cut from LL and TT orientations of alloy tool steel. All fracture origins were defects inside the materials or very near surface. The S-N curves were monotonously decreasing slope as Nf incre
Publikováno v:
Journal of the Society of Materials Science, Japan. 54:1036-1040
A micro-sized fracture toughness testing technique has been applied to investigate the fracture properties of colonies in a fully lamellar Ti-46Al-5Nb-1W alloy. Micro-sized cantilever specimens with a size≈10×20×50 μm3 were prepared by focused i
Publikováno v:
Journal of the Society of Materials Science, Japan. 54:187-192
The isothermal low cycle fatigue (LCF) fracture behavior of a new generation titanium alloy matrix composite, SP-700/SCS-6, were investigated compared with the monolithic matrix alloy. To study the effects of the test temperature and the loading freq
Publikováno v:
Journal of the Society of Materials Science, Japan. 53:223-229
In order to clarify the fatigue behavior of Cu-6Ni-2Mn-2Sn-2Al alloy which was aged (400°C, 3h) after 80% swaging, fatigue tests of smooth specimens have been carried out. In addition to this, fatigue tests of the alloy with 0.1% Zr have been perfor
Publikováno v:
Journal of the Society of Materials Science, Japan. 52:1337-1344
In order to investigate the effects of alumina short fiber volume fraction on the fatigue property at room and elevated temperature, the rotating bending fatigue tests were carried out on alumina short fiber reinforced aluminum alloy composites (MMCs