SAE J391-2011
定义为粒度

Definition for Particle Size


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SAE J391-2011



标准号
SAE J391-2011
发布日期
2011年06月01日
实施日期
废止日期
中国标准分类号
A42
国际标准分类号
19.120
发布单位
美国机动车工程师协会
被代替标准
SAE J 391-1981
适用范围
"Effective particle or domain size" is a phrase used in X-ray diffraction literature to describe the size of the coherent regions within a material which are diffracting. Coherency in this sense means diffracting as a unit. Small particle size causes X-ray line broadening and as such can be measured. It has been shown related to substructure as observed in transmission electron microscopy. Particle size is affected by hardening, cold working, and fatigue; conversely, there is increasing evidence that particle size, per se, affects both static and dynamic strength.




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