| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable estimation of the amount of precipitation-strengthening for a size and a number density of precipitation particles. <P>SOLUTION: There is prepared a model alloy material which has the same matrix and kind of a precipitate as a precipitation-strengthened type alloy, and in which, of the amounts of strengthening, only the amount of precipitation strengthening is varied by heat treatment conditions. And the amount of the precipitation strengthening of the model alloy material is obtained by the variation of yield strength caused by precipitation and the solute concentration of elements constituting precipitation particles. Further, a resistance force per one of the precipitation particles is calculated from a size and a number density of the precipitation particles in the model alloy material, and the correlation is obtained between the size of the precipitation particles and the resistance force per one of the precipitation particles. Meanwhile, a size and a number density of precipitation particles in the precipitation-strengthened type alloy is obtained, and, to the obtained correlation, the size of the precipitation particles therein is applied to thereby obtain a resistance force per one of the precipitation particles therein. The amount of precipitation strengthening is obtained by using the obtained resistance force, and the size and the number density of the precipitation particles therein. <P>COPYRIGHT: (C)2012,JPO&INPIT |
