Dislocation density has units of inverse of mm square. Why then according to hall petch equation it is taken as inverse function of grain size i.e. having units of only inverse of mm ??
SunilIron
Dislocation density has units of inverse of mm square. Why then according to hall petch equation it is taken as inverse function of grain size i.e. having units of only inverse of mm ??
Share
Please refer strengthening mechanism in Dieter book. Grain size is inverse of squre root of dislocation density. Not just inverse of dislocation density. Then only you get mm unit.
Please refer strengthening mechanism in Dieter book.
Grain size is inverse of squre root of dislocation density. Not just inverse of dislocation density. Then only you get mm unit.
See lessRefer to page 191 in dieter it is clearly written dislocation density= 1/D
Refer to page 191 in dieter it is clearly written dislocation density= 1/D
See lessGrain size is inverse of squre root of dislocation density
Grain size is inverse of squre root of dislocation density
See lessIt is number of dislocation per unit area.
It is number of dislocation per unit area.
See less