Kinetics of martensitic transformations in some ferrous and non-ferrous alloys

Autor:	Tomoyuki Kakeshita, Ken’ichi Shimizu, Toshio Saburi
Rok vydání:	2000
Předmět:	Materials science General Chemical Engineering Alloy Metallurgy Hydrostatic pressure General Physics and Astronomy Thermodynamics engineering.material Magnetostatics Isothermal process Ferrous Isothermal transformation diagram Martensite Diffusionless transformation engineering
Zdroj:	Philosophical Magazine B. 80:171-181
ISSN:	1463-6417 1364-2812
DOI:	10.1080/13642810008208606
Popis:	The influence of hydrostatic pressure and magnetic fields on the athermal and the isothermal martensitic transformations in Fe-29.9at.% Ni, Fe-31.7at.% Ni, Fe-32.3 at.% Ni, Cu-29.1 at.% Al-3.6 at.% Ni and Fe-24.0 at.% Ni-4.0 at.% Mn alloys have been examined in order to clarify the difference between the athermal and isothermal transformation processes. The following results were obtained. Firstly, a martensitic transformation occurs after some incubation time during isothermal holding at a temperature higher than the transformation start temperature Ms in zero external field and no hydrostatic pressure for Fe-Ni and Cu-Al-Ni alloys which originally exhibit athermal martensitic transformations. Secondly, athermal martensitic transformations in Fe-Ni alloys change to isothermal transformations under hydrostatic pressure. Thirdly, in the isothermal martensitic transformation in an Fe-Ni-Mn alloy, a static magnetic field lowers the nose temperature and increases the incubation time reauired for the ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b619b5ebbd6a052eaf2d6ce7bdee2009 https://doi.org/10.1080/13642810008208606 Zobrazit plný text záznamu Plný text ve formátu PDF