scholarly journals THE FORTY-SEVENTH GOLD MEDALIST OF THE JAPAN INSTITUTE OF METALS, 2002 Martensitic Transformations: Microstructures and Uniaxial Stress, Magnetic Field and Hydrostatic Pressure Effects

2002 ◽  
Vol 43 (8) ◽  
pp. 2050-2057 ◽  
Author(s):  
Ken’ichi Shimizu
Keyword(s):  
Magnetic Field ◽  
Hydrostatic Pressure ◽  
Martensitic Transformations ◽  
Uniaxial Stress ◽  
Pressure Effects ◽  
Gold Medalist

An Interpretation on Kinetics of Martensitic Transformation

2011 ◽  
Vol 172-174 ◽  
pp. 90-98 ◽  
Author(s):  
Tomoyuki Kakeshita ◽  
Takashi Fukuda ◽  
Yong-Hee Lee
Keyword(s):  
Magnetic Field ◽  
Hydrostatic Pressure ◽  
Martensitic Transformation ◽  
Magnetic Fields ◽  
Martensitic Transformations ◽  
Phenomenological Theory ◽  
Time Dependent ◽  
Isothermal Process ◽  
Kinetics Of ◽  
Transformation Processes

We have investigated athermal and isothermal martensitic transformations (typical displacive transformations) in Fe–Ni, Fe–Ni–Cr, and Ni-Co-Mn-In alloys under magnetic fields and hydrostatic pressures in order to understand the time-dependent nature of martensitic transformation, that is, the kinetics of martensitic transformation. We have confirmed that the two transformation processes are closely related to each other, that is, the athermal process changes to the isothermal process and the isothermal process changes to the athermal one under a hydrostatic pressure or a magnetic field. These findings can be explained by the phenomenological theory, which gives a unified explanation for the two transformation processes previously proposed by our group.

Martensitic transformations in some ferrous and non-ferrous alloys under magnetic field and hydrostatic pressure

1999 ◽  
Vol 70 (2) ◽  
pp. 65-113 ◽  
Author(s):  
Tomoyuki Kakeshita ◽  
Toshio Saburi ◽  
Koichi Kind ◽  
Shoichi Endo
Keyword(s):  
Magnetic Field ◽  
Hydrostatic Pressure ◽  
Martensitic Transformations ◽  
Ferrous Alloys

Hydrostatic pressure effects on vestibular hair cell afferents in fish and crustacea

2003 ◽  
Vol 13 (4-6) ◽  
pp. 235-242
Author(s):  
Peter J. Fraser ◽  
Stuart F. Cruickshank ◽  
Richard L. Shelmerdine
Keyword(s):  
Hydrostatic Pressure ◽  
Hair Cells ◽  
Signal To Noise Ratio ◽  
Angular Acceleration ◽  
Pressure Effects ◽  
Sensory Cells ◽  
Associated Gas ◽  
Piston Mechanism ◽  
New Finding ◽  
Resting Activity

Following the discovery of a hydrostatic pressure sensor with no associated gas phase in the crab, and the knowledge that several systems of cells in culture show long term alterations to small changes in hydrostatic pressure, we show here that vestibular type II hair cells in a well known model system (the isolated elasmobranch labyrinth), are sensitive to hydrostatic pressure. This new finding for the vertebrate vestibular system may provide an explanation for low levels of resting activity in vertebrate hair cells and explain how fish without swim bladders sense hydrostatic cues. It could have implications for humans using their balancing systems in hypobaric or hyperbaric environments such as in aircraft or during space exploration. Although lacking the piston mechanism thought to operate in crab thread hairs which sense angular acceleration and hydrostatic pressure, the vertebrate system may use larger numbers of sensory cells with resultant improvement in signal to noise ratio. The main properties of the crab hydrostatic pressure sensing system are briefly reviewed and new experimental work on the isolated elasmobranch labyrinth is presented.

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