±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 369  |  »Ø¸´: 4
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

СÀ¼»¨

Òø³æ (ÖøÃûдÊÖ)

[½»Á÷] ÇóÓ¢Óï¸ßÊÖ°ïÐÞ¸ÄÒ»ÏÂÕªÒª£¬ÖÐÒëÓ¢£¬·Ç³£¸Ðл£¡

л¾øÈí¼þ·­Ò룡
°ÑÖÐÎÄÕªÒª·­Òë³ÉÓ¢ÎÄ£¬·­ÒëÒªÇó£ºÓï¾ä±ê×¼£¬¹æ·¶£¡
Õâ¸öÕªÒª¶ÔÎÒºÜÖØÒª£¡ÇëÓ¢Óï¸ßÊÖ°ï°ï棡


ÕªÒª£º²ÉÓÃÏೡ·½·¨£¬Ä£ÄâÁ˶à¸ö¿Õ¼äÈ¡ÏòµÄ°ô×´µÚ¶þÏàÁ£×Ó¶Ô»ùÌå¾§Á£³¤´óµÄÓ°Ïì¡£½á¹û±íÃ÷£ºÔÚ¾§Á£³¤´ó¹ý³ÌÖУ¬°ô×´µÚ¶þÏàÁ£×ÓλÓÚ¾§½ç´¦²¢Óë¾§½ç·½ÏòÒ»Ö£¬µÚ¶þÏàÁ£×Ó±íÏÖ³öÇ¿Áҵض¤Ôú¾§½çµÄ×÷Óã¬Æ½¾ù¾§Á£¼«ÏÞ°ë¾¶¿ÉÒÔÓÃZener¹ØÏµ±íʾ£»ÔÚµÚ¶þÏàÁ£×ÓÃæ»ý·ÖÊýºÍÁ£×ӳߴç·Ö±ðÏàͬµÄÇé¿öÏ£¬µ±µÚ¶þÏàÁ£×ÓÃæ»ý·ÖÊý½ÏС£¨Ð¡ÓÚ5%£©Ê±£¬°ô×´Á£×ÓÓëÇòÐÎÁ£×Ó¶Ô¾§Á£³¤´óµÄ¶¤Ôú×÷ÓÃûÓÐÃ÷ÏÔ²î±ð£»µ±Á£×ÓÃæ»ý·ÖÊý½Ï´ó£¨´óÓÚ5%£©Ê±£¬°ô×´Á£×Ó¶¤Ôú¾§½çµÄЧ¹ûºÃÓÚÇò×´Á£×ӵͤÔúЧ¹û¡£

ÒÔϵķ­ÒëÓкܶàµÄ벡£¬½ö¹©²Î¿¼£¬Çë¸ßÊÖ°ïÐ޸ĻòÖØÐ·­Ò룡лл£¡

Abstract: The phase-field method was employed to simulate the effect of the geometric orientation and shape of second-phase particles to the matrix grain growth. Simulation results show that, in the grain growth process, most of the spherical particles were in the intersection of three crystals, stick particles were at the grain boundaries in the same direction with the grain boundary, and grain showed a strong grain boundary pinning effect and the final average grain radius can be expressed by Zener relations. Under the condition of the same area fraction and particle size, there is no difference between stick particles and spherical particles in the pinning effect on grain growth when the second-phase particles is small(less than 5%) ;on the contrary, stick particles play better when the second-phase particles is large(larger than 5%).

[ Last edited by СÀ¼»¨ on 2009-10-27 at 17:51 ]

» ²ÂÄãϲ»¶

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

goodtimega

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
СÀ¼»¨(½ð±Ò+7,VIP+0):ллÄãµÄ°ïæ·­Ò룡ÎÒÔٺúÃ˼¿¼Ò»ÏÂÏÈ£¡ 10-30 08:52
zap65535(½ð±Ò+3,VIP+0):²¹·¢ 12-22 10:00
Abstract: The phase-field method was employed to simulate the effect of the geometric orientation and shape of second-phase particles to the matrix grain growth. Simulation results show that, in the grain growth process, most of the spherical particles are in the intersection of three crystals. Stick particles are at the grain boundaries in the same direction along the grain boundary.  The grain shows a strong pinning effect and the final average grain radius can be expressed by Zener relations. Under the condition of the same area fraction and particle size, there is no difference between stick particles and spherical particles in the pinning effect on grain growth when the second-phase particles is small(less than 5%) . On the contrary, stick particles play an increasingly important role when the second-phase particles is large (larger than 5%).
4Â¥2009-10-28 05:53:13
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 5 ¸ö»Ø´ð

yzhang1986

Ìú¸Ëľ³æ (ÎÄ̳¾«Ó¢)

ÓÅÐã°æÖ÷

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
СÀ¼»¨(½ð±Ò+4,VIP+0):¶àлָµã£¡ÄãÈôÓпյϰ£¬ºÃºÃ°ïÎÒÐÞ¸Äһϣ¡Ð»Ð»£¡ 10-27 21:58
zap65535(½ð±Ò+2,VIP+0):²¹·¢ 12-22 10:00
the area fraction of the second-phase particles less than 5%
the area fraction of the second-phase particles larger than 5%
play better£¬perform better
µÚ¶þ¾äÓе㳤
2Â¥2009-10-27 21:31:01
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

judecca

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
СÀ¼»¨(½ð±Ò+7,VIP+0):ллÄãµÄ°ï棡ÎÒÔٺúÃ˼¿¼Ò»ÏÂÏÈ£¡ 10-30 08:52
zap65535(½ð±Ò+3,VIP+0):²¹·¢ 12-22 09:59
ÉÔ΢¿´ÁËһϡ£Ï£ÍûÄܰïÖúÄã

Abstract: The phase-field method was employed to simulate the effect of the geometric orientation and shape of second-phase particles to the matrix grain growth. Simulation results show that, in the grain growth process, most of the spherical particles were in the intersection of three crystals, whereas stick particles at the grain boundaries were in the same direction with the grain boundary£©, moreover, grain (Õâ¸ögrainµ¥Êý»¹ÊǸ´Êý£¬µ¥ÊýÒª¼Óa£¬Èç¹ûÓÐÖ¸´ú¼Óthe£©showed a strong grain boundary pinning effect and the final average grain radius can be expressed by Zener relations.£¨Õâ¾äÎҹ⿴ӢÎľõµÃÓÐÎÊÌ⣬±í´ï²»ÊǺܺ㬵«ÎÒû¸Ä£© £¨Under the condition of Õâ¸öÊDz»ÊÇ¿ÉÒÔÓÃIn condition that´úÌæ£©the same area fraction and particle size, there is no difference between stick particles and spherical particles in the pinning effect on grain growth when the second-phase particles are small(less than 5%) ;on the contrary, stick particles behave better when the second-phase particles are larger(larger than 5%).£¨Ç°ÃæÓÃÁËbetterºóÃæÒ²ÒªÓñȽϼ¶£¬·ñÔò²»Ò»Ö£©

[ Last edited by judecca on 2009-10-28 at 05:52 ]
ÃüÖÐÓÐʱÖÕÐëÓУ¬ÃüÖÐÎÞʱĪǿÇó¡£
3Â¥2009-10-28 05:50:13
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

sdsp

ÈÙÓþ°æÖ÷ (ÖªÃû×÷¼Ò)

S

ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
СÀ¼»¨(½ð±Ò+7,VIP+0):ллÄãµÄ°ï棡ÎÒÔٺúÃ˼¿¼Ò»ÏÂÏÈ£¡ 10-30 08:52
zap65535(½ð±Ò+3,VIP+0):²¹·¢ 12-22 10:00
The phase-field method was employed to simulate the effect of different geometric orientation club-shaped second-phase particles to the matrix grain growth. Simulation results showed that the second-phase particles precipitated along matrix grain boundaries and had same direction with the grian boundary.And at same time the second-phase particles were observed a strong pinning effect to grain boundary. The average grain radius can be expressed by Zener function relationship. In the case of the same second-phase particles area fraction and matrix particle size, no larger difference existed for clup-shaped particles and spherical particles in the pinning effect on matrix grain growth when the second-phase particles area fraction was small(less than 5%) . However club-shaped particles pinning influence to grain boundary could be better than the spherical particles when the area fraction was larger than 5%.
ÍŽụÖú¡£Scienceisawonderfulthingifonedoesnothavetoearnone'slivingatit.
5Â¥2009-10-28 23:42:46
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 318Çóµ÷¼Á +11 ykyhsa 2026-04-05 13/650 2026-04-05 12:44 by aidndnjck
[¿¼ÑÐ] 081700£¬311£¬Çóµ÷¼Á +12 ¶¬Ê®Èý 2026-04-04 13/650 2026-04-05 08:43 by qlm5820
[¿¼ÑÐ] 085600£¬321·ÖÇóµ÷¼Á +10 ´ó²öС×Ó 2026-04-04 11/550 2026-04-05 08:25 by 544594351
[¿¼ÑÐ] ¿¼Ñе÷¼Á +5 ËÄ´¨ÍõÌÎ 2026-04-04 5/250 2026-04-04 22:18 by à£à£à£0119
[¿¼ÑÐ] 085600µ÷¼Á +4 1amJJ 2026-04-02 4/200 2026-04-04 21:53 by hemengdong
[¿¼ÑÐ] 085600£¬320·ÖÇóµ÷¼Á +14 ´ó²öС×Ó 2026-04-04 15/750 2026-04-04 16:27 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 293·ÖÇóµ÷¼Á£¬ÍâÓïΪ¶íÓï +6 ¼ÓÒ»Ò»¾Å 2026-03-31 6/300 2026-04-04 14:57 by ´ÏÃ÷µÄ´óËÉÊó
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +11 ÎâèùÓ±£¡ 2026-04-03 11/550 2026-04-04 09:56 by ССÊ÷2024
[¿¼ÑÐ] Çóµ÷¼Á£¬Ò»Ö¾Ô¸ÄϾ©º½¿Õº½Ìì´óѧ £¬080500²ÄÁÏ¿ÆÑ§Ó빤³Ìѧ˶ +10 @taotao 2026-04-03 10/500 2026-04-04 09:01 by T¿É¿ÉÎ÷ÀïT
[¿¼ÑÐ] ѧ˶288µ÷¼Á!!! +3 СÍõxw123 2026-04-03 3/150 2026-04-03 21:20 by à£à£à£0119
[¿¼ÑÐ] ÉúÎïѧ308·ÖÇóµ÷¼Á£¨Ò»Ö¾Ô¸»ª¶«Ê¦´ó£© +7 ÏàÐűػá¹ââÍòÕ 2026-04-02 7/350 2026-04-03 16:48 by rzh123456
[¿¼ÑÐ] 338Çóµ÷¼Á +7 êɹ¦? 2026-04-03 7/350 2026-04-03 16:46 by wxiongid
[¿¼ÑÐ] 286Çóµ÷¼Á +7 Faune 2026-03-30 7/350 2026-04-03 10:14 by linyelide
[¿¼ÑÐ] µ÷¼Á +3 ºÃºÃ¶ÁÊé¡£ 2026-04-01 6/300 2026-04-02 15:49 by liumengping
[¿¼ÑÐ] 271Çóµ÷¼Á +15 ÀÕ²¼ÀÊ@ 2026-03-31 20/1000 2026-04-02 11:24 by Sammy2
[¿¼ÑÐ] 322Çóµ÷¼Á +5 ìäÙÒXX 2026-03-31 6/300 2026-04-02 10:08 by Çóµ÷¼Ázz
[¿¼ÑÐ] 085410 Ò»Ö¾Ô¸211 22408·ÖÊý359Çóµ÷¼Á +3 123456789qw 2026-03-31 4/200 2026-04-02 00:06 by ÒåÎÄwang
[¿¼ÑÐ] 290Çóµ÷¼Á +5 dfffsar 2026-03-29 5/250 2026-04-01 19:45 by 6781022
[¿¼ÑÐ] ÉúÎïÓëÒ½Ò©¿¼Ñе÷¼Á +5 Ìúº©º©123425 2026-03-31 5/250 2026-04-01 18:01 by syh9288
[¿¼ÑÐ] 313Çóµ÷¼Á +6 Âô¸ö¹Ø×Ó°É 2026-03-31 6/300 2026-03-31 10:58 by Jaylen.
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û