Znn3bq.jpeg
²é¿´: 644  |  »Ø¸´: 2
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

°Ë½ÇÕ¯

Òø³æ (ÖøÃûдÊÖ)

[ÇóÖú] Çë°ïÈóÉ«2¾ä»°£¬²ÄÁÏѧ¿Æ£¬Ó¢ÒëÖУ¬Ð»Ð»¡£

Çë¸ßÊÖ°ïÈóɫһÏ£¬¾¡Á¿Òâ˼µ½Î»£¬ÓֿɶÁÐÔºÍÂß¼­ÐԺá£
ÒÔϺìÉ«×ÖÌ岿·ÖÊÇÖØµãÐèÒªÈóÉ«µÄµØ·½£¬Ð»Ð»¡£


         In nanocrystalline materials, the build-up of dislocation networks near grain boundaries is precluded by the small size of the grains, leading to a softening of the material as the grain size decreases, rather than the increase typically seen in larger-grained materials. Another example of nanoscale behavior influencing material properties arises when coherency strains at atomic interfaces control non-equilibrium particle precipitation, which is relevant to solid solution hardening of advanced alloys.

·­Ò룺 ÔÚÄÉÃײÄÁÏÖУ¬ÔÚ¾§½ç´¦ÀÛ»ýλ´íÍø±»Ð¡³ß´ç¾§Á£ËùÅųý£¬µ¼ÖÂËæ×ž§Á£³ß´çµÄ±äС£¬²ÄÁÏÈí»¯£¬¶ø²»ÏñÔÚ´ó¾§Á£²ÄÁÏÖÐÄÇÑù£¬¾§Á£³ß´ç±äС²ÄÁÏÇ¿¶È»áÏÔÖøÔö¼Ó¡£ÄÉÃ׳߶ÈÓ°Ïì²ÄÁÏÐÔÄܵÄÁíÒ»¸öÀý×Ó¾ÍÊÇ£¬ÔÚÔ­×Ó½çÃæ´¦¿ØÖÆ·ÇÆ½ºâÁ£×ÓÎö³öµÄÏà¸ÉÓ¦±äÓëÏȽøµÄºÏ½ðµÄ¹ÌÈÜÌåÓ²»¯Ïà¹Ø¡£

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

8814402

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï
Carena: ½ð±Ò+1, ¸ÐлӦÖú 2012-11-06 21:51:06
°Ë½ÇÕ¯: ½ð±Ò+3, ¡ï¡ï¡ïºÜÓаïÖú, ÔٴθÐлÄãµÄ°ïæ¡£ 2012-11-07 11:31:45
ÔÚÄÉÃײÄÁÏÖУ¬ÔÚ¾§½ç´¦ÀÛ»ýλ´íÍø±»Ð¡³ß´ç¾§Á£ËùÅųý£¬µ¼Ö²ÄÁÏËæ×ž§Á£³ß´çµÄ±äС¶øÈí»¯£¬¶ø²»ÏñÔÚ´ó¾§Á£²ÄÁÏÖÐÄÇÑùÔÚ¾§Á£³ß´ç±ä´óʱ²ÄÁÏÈí»¯¡£ÄÉÃ׳߶ÈÐÐΪӰÏì²ÄÁÏÐÔÄܵÄÁíÒ»¸öÀý×Ó¾ÍÊÇ£¬ÔÚÔ­×Ó½çÃæ´¦¿ØÖÆ·ÇÆ½ºâÁ£×ÓÎö³öµÄÏà¸ÉÓ¦±äÓë¸ß¼¶ºÏ½ðµÄ¹ÌÈÜÌåÓ²»¯Ïà¹Ø¡£

²»¶®±³¾°£¬´Õ»îÊÂÁË
2Â¥2012-11-06 21:02:48
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

220chengeng

ľ³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
°Ë½ÇÕ¯: ½ð±Ò+5, ·­ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ·Ç³£¸ÐлÄãµÄ°ïæºÍ½¨Òé¡£ÎÒ»áºÃºÃÌå»áÄãµÄ½¨Òé¡£ 2012-11-07 11:31:29
In nanocrystalline materials, the build-up of dislocation networks near grain boundaries is precluded by the small size of the grains, leading to a softening of the material as the grain size decreases, rather than the increase typically seen in larger-grained materials. Another example of nanoscale behavior influencing material properties arises when coherency strains at atomic interfaces control non-equilibrium particle precipitation, which is relevant to solid solution hardening of advanced alloys.

ÔÚÄÉÃײÄÁÏÖУ¬ÓÉÓÚλ´íÍøµÄÀÛ»ýÊܵ½Ð¡¾§Á£µÄÅųâÓ°Ï죬µ¼Ö²ÄÁÏËæ×ž§Á£³ß´çµÄ±äС¶øÈí»¯£¬¶ø²»ÏñÔÚ´ó¾§Á£²ÄÁÏÖÐÄÇÑù²ÄÁÏËæ¾§Á£³ß´ç±ä´óʱ¶øÈí»¯¡£ÁíÍ⣬µ±·ÇƽºâÁ£×ӵijÁ½µÊܵ½Ô­×Ó½çÃæ´¦Ïà¸ÉÓ¦±äµÄ¿ØÖÆÊ±£¬ÆäÓë¸ß¼¶ºÏ½ðµÄ¹ÌÈÜÌåÓ²»¯´æÔÚÒ»¶¨µÄ¹ØÏµ£¬ÕâÒ²ÊÇÄÉÃ×¼¶Ó¦ÓÃÓ°Ïì²ÄÁÏÐÔÄÜÁíÒ»¸öʵÀý¡£

˵Ã÷£º
1.Ãû´ÊÐÔÎïÖ÷´ú´ÊµÄ´ÎÐòÒª°ÑÎÕÇå³þ£¬ÊÇÀÛ»ýÊܵ½Ð¡¾§Á£µÄÅųý»òÅų⣬²»ÊÇλ´íÍø¡£
2.ÖÐÎÄÒ»°ã¶¼»áÔÚ±í´ïÖмÓÈë¡°Ó°Ï족£¬ÕâÑù±í´ï¿ÉÄÜ·­ÒëζµÀ¾ÍÉÙЩ¡£
3.¾ÍÊÇÓ¢ÒëÖÐʱҪעÒ⣬һ¶¨²»Òª°´ÕÕÓ¢ÎĵÄ˳ÐòÀ´·­Ò룬Ȼºó¾ÍÊDZ»¶¯½á¹¹²»Ò»¶¨ÒªÓá°±»¡±×Ö£¬¿ÉÒÔÓᰵõ½¡±¡°Êܵ½¡±µÈ£¬²ÅÊDZȽϵصÀµÄÖÐÎıí´ï¡£
4.Èç¹û¸Ð¾õ·­Òë³öÀ´ºÜÞÖ¿Ú£¬²»·ÁÀí½âÁËÓ¢ÎÄÔ­Òâºó£¬ÍüµôÔ­ÎÄ£¬×Ô¼ºÖØÐÂ×éÖ¯£¬ÕâÑù¾ÍûÓз­ÒëζµÀ¡£µ«ÊÇÒ»¶¨Òª×¢Òâ²»ÄÜÔÙ·­ÒëµÄ¹ý³ÌÖÐ͵»»ÁËÖ÷Ó×Ô¼º»¹²»Çå³þ£¬Äã·­ÒëµÄ¶«Î÷ÊÇÒªÈñðÈË¿´¶®¶øÃ»ÓÐÆçÒåµÄ¡£
5.µÚ¶þ´¦±êºìµÄÊõÓïºÍÒâ˼ÎÒ¿ÉÄÜ·­Òë´íÁË£¬µ«ÊǾä×Ó·­ÒëµÄ½á¹¹¿ÉÒԲο¼Ò»ÏÂÎÒµÄ˼·£¬Å×שÒýÓñ£¬¼ûЦÁË¡£
3Â¥2012-11-07 09:59:13
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ °Ë½ÇÕ¯ µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ¿¼Ñе÷¼Á-²ÄÁÏÀà-284 +27 Ïë»»ÊÖ»ú²»Ïë½âÊ 2026-04-08 27/1350 2026-04-09 19:04 by ̽123
[¿¼ÑÐ] Ò»Ö¾Ô¸¿ó´ó£¬²ÄÁϹ¤³Ìר˶314·Ö£¬0856¿Éµ÷¶¼¿ÉÒÔ +10 ÎÞи¿É»÷µÄ¾ÞÈË 2026-04-09 10/500 2026-04-09 18:44 by l_paradox
[¿¼ÑÐ] 367Çóµ÷¼Á +10 hffQAQ 2026-04-09 10/500 2026-04-09 18:06 by lijunpoly
[¿¼ÑÐ] 305Çóµ÷¼Á +4 77Qi 2026-04-07 4/200 2026-04-09 17:27 by wp06
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤×¨Ë¶329 Çóµ÷¼Á +24 ¶îcc 2026-04-06 25/1250 2026-04-09 16:01 by wp06
[¿¼ÑÐ] Çóµ÷¼Á +7 chenxrlkx 2026-04-05 9/450 2026-04-09 09:04 by wj165256
[¿¼ÑÐ] 266µ÷¼Á +8 daya sun 2026-04-07 9/450 2026-04-08 20:27 by yutian743
[¿¼ÑÐ] »·¾³×¨Ë¶µ÷¼Á +15 »á˵»°µÄÖâ×Ó 2026-04-06 15/750 2026-04-08 18:56 by »·»¯²Ä-СÉú
[¿¼ÑÐ] Ò»Ö¾Ô¸211£¬»¯Ñ§Ñ§Ë¶£¬310·Ö£¬±¾¿ÆÖصãË«·Ç£¬Çóµ÷¼Á +20 ŬÁ¦·Ü¶·112 2026-04-07 21/1050 2026-04-08 14:54 by screening
[¿¼ÑÐ] 275 Çóµ÷¼Á +8 Lei812514 2026-04-07 8/400 2026-04-08 12:46 by chemisry
[¿¼ÑÐ] Çó²ÄÁϵ÷¼Á£¬Ò»Ö¾Ô¸Ö£ÖÝ´óѧ289·Ö +21 ˶ÐǸ° 2026-04-03 21/1050 2026-04-08 11:55 by Öí»á·É
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +13 ºº123456 2026-04-07 14/700 2026-04-07 22:53 by À´¿´Á÷ÐÇÓê10
[¿¼ÑÐ] ¸´ÊÔµ÷¼Á +9 ´ºÈÕÀ´ÐÅ- 2026-04-03 9/450 2026-04-07 15:17 by ¾¡Ë´Ò¢1
[¿¼ÑÐ] ÊýÒ»Ó¢Ò»274»úеµ÷¼Á +5 ÐÇÔÉÁ÷ϼ 2026-04-04 6/300 2026-04-05 11:38 by arrow8852
[¿¼ÑÐ] 0854Çóµ÷¼Á +4 assdll 2026-04-04 4/200 2026-04-05 09:44 by zhq0425
[¿¼ÑÐ] 290Çóµ÷¼Á +7 luoziheng 2026-04-04 7/350 2026-04-04 23:17 by lqwchd
[¿¼ÑÐ] 344²ÄÁÏÓ뻯¹¤µ÷¼Á +9 µ÷¼ÁÉϰ¶«^ 2026-04-03 9/450 2026-04-04 23:10 by happyddm
[¿¼ÑÐ] µ÷¼Á +4 ÊÇ¿ÉÀÖ²»ÊÇ¿ÉÀÖ 2026-04-04 4/200 2026-04-04 19:41 by ÌÆãå¶ù
[¿¼ÑÐ] ¸´ÊÔµ÷¼Á +6 ·¶¸ùÅà 2026-04-04 6/300 2026-04-04 14:27 by ÍÁľ˶ʿÕÐÉú
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +4 Ò»ÑùYWY 2026-04-03 4/200 2026-04-03 09:48 by À¶ÔÆË¼Óê
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û