No abstract

No abstract

A systematic substitution of Ge, Si, C and Co for Ga in the non-stoichiometric Ni -Mn -Ga alloys was performed. The relationship between the compositions of different elements including Ni, Mn, Ga, Ge, Si, C, Co, In and martensitic transformation temperature (M s ) was studied in detail for the present alloys together with data collected from a variety of sources. It is found that M s is a sensitive parameter to the composition. The size factor and electron concentration are usually thought to be the way the composition influences M s in the Ni -Mn -Ga alloys. Here, analyzing by linear regression, the electron density maybe a most appropriate parameter to describe the way the composition influences M s when compared with size factor and electron concentration.

No abstract

No abstract