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SAE J391 (JUN2011)

Current Revision

Definition for Particle Size

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"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.

SDO SAE: SAE International
Document Number J391
Publication Date June 1, 2011
Language en - English
Page Count 2
Revision Level 201106
Supercedes
Committee
Publish Date Document Id Type View
June 1, 2011 J391_201106 Revision
July 1, 1981 J391_198107 Revision