At a certain fracturetoughnessvalue, fracture probability of weldments increases with increase of the local brittle zone size.
在一定的断裂韧度前提下，随着局部脆性区尺寸的增加，焊接热影响区的脆断概率增加。
2
Since the fracturetoughnessvalue is a very important parameter in defect assessment and usually could not obtained from in service piping which need to assess.
断裂韧度值在缺陷评定中是一个非常重要的参数，但不能从在役管道中获得。
3
The compacting density, bending strength, fracturetoughness and rigidity value of the synthesis can be prepared to be applicable gradient material structure under suitable pressure and temperature.