Keywords: HallPetchLimit.png Illustration of the theoretical limit for grain boundary strengthening نمایش Ù…Øدودیت نظری استØکام ŒØ¨Ø®Ø´ÛŒ مرزدانه ŒØ§ÛŒ Transferred from http //en wikipedia org en wikipedia 2007-11-25 Original uploader was Arpun at http //en wikipedia org en wikipedia Released into the public domain by the author en wikipedia Arpun original upload log page en wikipedia HallPetchLimit png 2007-11-25 01 36 Arpun 600×600× 19413 bytes <nowiki>Illustration of Hall-Petch strengthening limit</nowiki> 2007-11-25 01 13 Arpun 600×600× 19145 bytes <nowiki>Illustration of the theoretical limit for grain boundary strengthening</nowiki> Applied sciences Inventions Metallurgy |