²é¿´: 2247  |  »Ø¸´: 39
¡¾½±Àø¡¿ ±¾Ìû±»ÆÀ¼Û34´Î£¬×÷ÕßmeixinanÔö¼Ó½ð±Ò 27 ¸ö

meixinan

½û³æ (ÕýʽдÊÖ)


[×ÊÔ´] ¾­µä×ÛÊö¡ª¡ªµÈ¾¶½ÇÇ¿ÖÆ¼·Ñ¹×éÖ¯Ñݱä

µÈ¾¶½ÇÇ¿ÖÆ¼·Ñ¹×éÖ¯ÑݱäTexture evolution in equal-channel angular extrusion

Irene J. Beyerlein£»L¨¢szl¨® S. T¨®th

Contents
1. Introduction . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 429
2. Background. . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 431
2.1. Severe plastic deformation (SPD) processes . . . . . .. . . . . . . . . . . . . 431
2.1.1. Equal-channel angular extrusion (ECAE). . . . . . . . . . . . . . . . . . . 431
2.1.2. Definitions of deformation and velocity gradient in ECAE. . . . . .  . . . . 431
2.1.3. Simple shear model . . . . . . . .  . . . . . . . . . . 432
2.1.4. Distortions and rotations of material elements in ECAE . . . . . .. . 433
2.1.5. Multiple passes: rotations and strain path changes . . . . . . 433
2.1.6. Relationship to other deformation processes: drawing, rolling, plane
strain compression, torsion . . . . . . . . . . . . . . 435
2.1.7. Other SPD techniques. . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 435
2.2. Ideal texture orientations in simple shear. . . . . . . .. . . . . . . . . . . . . . . 436
2.2.1. Fcc crystal structure . . . . . . . . . . . . . . . . . . . . . . . . . 436
2.2.2. Bcc crystal structure. . . . . . . . . . . . . .  . . . . . . . . . . 436
2.2.3. Hcp crystal structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 436
2.3. Ideal texture orientations in ECAE . . . . . . . . . . . . . . . . . . . . . 438
3. ECAE texture measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 439
3.1. Cubic textures in ECAE . . . . . . . . . . . . . .  . . . . . . . . . . . . 441
3.1.1. Influence of die angle . . . . . . . . . . . . . . . . . . . . . . . . . . 441
3.1.2. First-pass textures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442
3.1.3. Influence of route and pass number . . . . . . . . . . . . . . 442
3.1.4. Fcc example: copper. . . . . . . . . . . . . .  . . . . . . . . 443
3.1.5. Bcc example: IF-steel . . . . . . . . . . . . . . . . .  . . . . . . . 445
3.1.6. Deviations from ideal texture positions . . . . . . . . . .  . . . . . . . 446
3.1.7. Texture strength . . . . . . . . . . . . . . . . . . . . . . 448
3.1.8. Saturation of texture with pass number . . . . . . . . . . . . . . . . 449
3.1.9. Effect of stacking fault energy . . . . . . . . . . . . . .. . . 449
3.1.10. Effect of deformation twinning . . . . . . . . . . . . . . . . . 449
3.1.11. Effect of substructure evolution . . . . . . . . . . . 450
3.1.12. Effect of temperature . . . . . . .. . . . . . . . . . . . . . 452
3.2. Hcp textures in ECAE . . . . . . . . . . . . . . . . . . . . . . . . 453
3.2.1. Slip and twinning modes . . . . . . . .  . . . . . . . . . 453
3.2.2. First-pass textures and effect of die angle . . . . . . . . . . . . . 453
3.2.3. Effect of route and pass number . . . . . . . . . . . . . . . . . 456
3.2.4. Effect of alloying. . . . . . . . . . . . .. . . . . . . . . . . . . . 456
3.2.5. Effect of deformation twinning . . . . . . . . . . . . . . . . . . 457
3.2.6. Effect of temperature . . . . . . . . . . . . .. . . . . . . . . . . . 457
3.3. Effect of initial texture . . . . . . . . . . . . . . . . . . . . . . . . . . . 458
3.3.1. ECAE of single crystals . . . . . . . . . . . . .. . . . . . . . . . . 458
3.3.2. Cubic polycrystals. . . . . . . . . . . . . . . . . . . . . . . 459
3.3.3. Hexagonal polycrystals. . . . . . . . . . . . . . . . . . . 463
3.3.4. Recommendations . . . . . . . . . . . . . . . . . . . . . . 465
3.4. Dynamic recrystallization . . . . . . . . . . . . . .  . . . . . . . . . . . . . . . 465
3.4.1. Cubic metals . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . 466
3.4.2. Hexagonal metals . . . . . . . . . . . . . . . . .  . . . . 467
4. Modeling texture evolution . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 468
4.1. Polycrystal models for SPD processes . . . . . . . . . . . . . .. . . . . . . . . . . 468
4.1.1. Full constraints (FC) Taylor polycrystal model . . . . . . . .  . . . . . . 469
4.1.2. Visco-plastic self-consistent (VPSC) polycrystal model . . . . . . . .  . 469
4.2. Assessment of model performance . . . . . . . . .. . . . . . . . . 469
4.3. Polycrystal model performance . . . . . . . . . . . .. . . . . . . . . . 470
4.4. VPSC predictions using the simple shear (SS) model . . . . . . . . . . . . . . . . . 470
5. Alternative deformation models for ECAE . . . . . . . . . . .. . . . . . . . 471
5.1. 2D and 3D finite element models . . . . . . . . .  . . . . . . . . . . . . 471
5.1.1. Corner gaps and plastic deformation zones (PDZ) . . . . . . 472
5.1.2. Inhomogeneous deformation . . . . . . . . . . .. . . . . . . . . . . . 473
5.1.3. Three-dimensional effects . . . . . . . . . . . . . . . . . . . 474
5.2. Nonphysical factors affecting assessment of model performance . . . . . . . . . . . . . . . . . . . . . . . 475
5.3. Texture calculations with finite element . . . . . . . . . . . . . . . 476
5.4. Heterogeneity in texture evolution . . . . . . . . . . . . . . . . . . . . . . . 477
5.5. Route A: heterogeneity and end-effects. . . . . . . . .  . . 478
5.6. Analytical flow models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 479
5.7. Texture calculations with analytical flow models. . . . . . . . . . . . . . . . . . . . 483
6. Extended texture calculations including grain-scale and subgrain-scale effects  484
6.1. Grain¨Cgrain interactions . . . . . . . . . . . . . . . 486
6.2. Grain shape effects . . . . . . . . . . . . . . . . . . . . . 486
6.3. Substructure models . . . . . . . . . . . . . 489
6.4. Deformation twinning. . . . . . . . . . . . . 490
6.5. Application: Modeling texture evolution in route C . . . . . . .  . . . 491
6.5.1. Grain¨Cgrain interactions . . . . . . . . . . . . . . . . . 492
6.5.2. Inhomogeneous deformation . . . . . . . . . . . . . . . . . . . . 492
6.5.3. Grain hardening and substructure evolution . . . . .. . . . . . . . 492
6.5.4. Imperfect reversal. . . . . . . .. . . . . . . . . . . . . . . 494
6.6. Sensitivity of texture to microstructural evolution (grain refinement) . . . . . 499
6.7. Influence of texture on post deformation of SPD materials . . . . . .. . 500
7. Concluding remarks and recommendations . . . . .  . . . . . . . . 502
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
References . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503
»Ø¸´´ËÂ¥

» ±¾Ìû¸½¼þ×ÊÔ´Áбí

  • »¶Ó­¼à¶½ºÍ·´À¡£ºÐ¡Ä¾³æ½öÌṩ½»Á÷ƽ̨£¬²»¶Ô¸ÃÄÚÈݸºÔð¡£
    ±¾ÄÚÈÝÓÉÓû§×ÔÖ÷·¢²¼£¬Èç¹ûÆäÄÚÈÝÉæ¼°µ½ÖªÊ¶²úȨÎÊÌ⣬ÆäÔðÈÎÔÚÓÚÓû§±¾ÈË£¬Èç¶Ô°æÈ¨ÓÐÒìÒ飬ÇëÁªÏµÓÊÏ䣺xiaomuchong@tal.com
  • ¸½¼þ 1 : Texture_evolution_in_equal-channel_angular_extrusion.pdf
  • 2013-07-28 12:20:22, 4.7 M

» ²ÂÄãϲ»¶

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

zy0411

ÖÁ×ðľ³æ (ÕýʽдÊÖ)


лл£¡
29Â¥2017-02-25 11:02:22
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

hedong

Ìú³æ (СÓÐÃûÆø)


¡ï¡ï¡ï¡ï¡ï ÎåÐǼ¶,ÓÅÐãÍÆ¼ö

¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡·Ç³£ºÃµÄÊ飬ÕýÊÇÎÒÐèÒªµÄ
36Â¥2018-04-20 17:33:38
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
¼òµ¥»Ø¸´
shawn_0012Â¥
2013-07-29 06:35   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
zjys58873Â¥
2013-07-29 18:09   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
zjys58874Â¥
2013-07-29 18:24   »Ø¸´  
¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
pekingma865Â¥
2013-10-25 14:37   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
2013-12-03 09:37   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
2013-12-13 21:34   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
shawn_0018Â¥
2013-12-14 05:47   »Ø¸´  
¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
2013-12-15 10:14   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
2014-03-11 09:06   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
zhulcxmcshsf11Â¥
2014-05-16 10:34   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
jpbivan12Â¥
2014-08-21 11:00   »Ø¸´  
ÈýÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
daikang13Â¥
2014-08-21 12:05   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
ddhtl2214Â¥
2014-11-04 19:14   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
ruiruihan15Â¥
2015-03-30 20:18   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
qing10816Â¥
2015-07-10 19:40   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
2015-09-09 19:08   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
zjys588718Â¥
2015-09-09 19:25   »Ø¸´  
¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
pizi102419Â¥
2015-11-30 15:03   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
fwkaoyan198920Â¥
2016-04-28 09:26   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
cheapskate21Â¥
2016-05-09 09:05   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
ӯӯɽ22Â¥
2016-05-31 13:36   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
ngdwgg200923Â¥
2016-08-22 15:01   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
momo201524Â¥
2017-01-17 20:00   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
liu330777825Â¥
2017-01-21 14:24   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
pony24226Â¥
2017-01-21 14:28   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
csu_long27Â¥
2017-02-18 14:31   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
zy041128Â¥
2017-02-25 11:02   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
fwkaoyan198930Â¥
2017-05-07 22:46   »Ø¸´  
¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
PLDJINDUI31Â¥
2017-10-15 18:19   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
¶ÎÓê¶32Â¥
2017-10-20 19:47   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
sandynini33Â¥
2017-10-21 09:43   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
zhengj198034Â¥
2017-11-06 09:27   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
lss107335Â¥
2017-12-22 08:31   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
wallanceben37Â¥
2018-04-20 19:00   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»ÏÂ
2019-09-30 21:26   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
2023-03-30 09:17   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
nclwens40Â¥
2023-04-21 20:22   »Ø¸´  
ÎåÐÇºÃÆÀ  ¶¥Ò»Ï£¬¸Ðл·ÖÏí£¡
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ meixinan µÄÖ÷Ìâ¸üÐÂ
¡î ÎÞÐǼ¶ ¡ï Ò»ÐǼ¶ ¡ï¡ï¡ï ÈýÐǼ¶ ¡ï¡ï¡ï¡ï¡ï ÎåÐǼ¶
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[»ù½ðÉêÇë] Ö»ÓÐÿÄêÕâÖÖʱºòÀ´¹ä¹äСľ³æ +20 yaoyewhu2008 2026-08-20 20/1000 2026-08-20 09:41 by 2026Äê¹ú×ÔÈ»»ù½
[»ù½ðÉêÇë] »¶Ó­·¢À´filecodeµÄMz6ºóµÄ´úÂëÑéÖ¤Æä¹æÂÉ +55 ҽѧÀÏÄк¢ 2026-08-13 125/6250 2026-08-20 09:02 by ҽѧÀÏÄк¢
[»ù½ðÉêÇë] ½ñÌì»ù½ð»á³ö½á¹ûÂð£¿20260819 +14 kkkl_v 2026-08-19 15/750 2026-08-20 08:21 by sunzitan
[»ù½ðÉêÇë] ʱ¼ä´Á±äÁË£¬ÄÜ¿´³öʲôÎÊÌ⣿ +12 »ùŵßä¿Í 2026-08-17 16/800 2026-08-19 22:04 by kk µÄСľ³æ
[»ù½ðÉêÇë] filecode£¬4¸öjtjcÁË +11 ziyangfang 2026-08-19 13/650 2026-08-19 21:28 by aasahr
[½Ìʦ֮¼Ò] ΪʲôÓà¶î±¦µÄÄ껯ÀûÂÊÔ½À´Ô½µÍ£¿Ö÷ÒªÔ­ÒòÓÐÄÄЩ£¿ +5 ˲ϢÓîÖæ 2026-08-15 5/250 2026-08-19 20:23 by super2002521
[»ù½ðÉêÇë] ½ñÌì·Å°ñûϷÁ衃 +4 yuleib84 2026-08-19 5/250 2026-08-19 19:52 by hhs666
[»ù½ðÉêÇë] filecode=ºóÃæµÚÒ»¸öÊÇ´óд×Öĸ +10 wangze12014 2026-08-14 12/600 2026-08-19 16:56 by ¿àÄѲ©Ê¿
[»ù½ðÉêÇë] ÅóÓÑȦ¿´µ½µÄ +6 wangzilk 2026-08-18 8/400 2026-08-19 10:55 by Haru815
[»ù½ðÉêÇë] ¿ìÅ©ÀúÆßϦ½ÚÁË£¬ÇáËÉһϣ¬ÄÐÈËÇÄÇÄ»°£¬Å®Ê©Ö÷Çë²»Òª½øÀ´¡£ +6 Tide man 2026-08-14 7/350 2026-08-19 09:56 by ZJTJZ
[»ù½ðÉêÇë] ʲôʱºò¿ª½±£¿ +6 CrisMessi 2026-08-18 6/300 2026-08-19 08:06 by Equinoxhua
[»ù½ðÉêÇë] ÖØÒªÏûÏ¢£¬ÖÐÎçϵͳÔÚά»¤ +10 yuleib84 2026-08-18 11/550 2026-08-19 07:30 by Óðë·ãf
[ÂÛÎÄͶ¸å] Ͷ¸å×Éѯ +4 wwm09 2026-08-17 6/300 2026-08-18 15:36 by wwm09
[»ù½ðÉêÇë] ʱ¼ä´ÁÓÖ±äÁË8-15 +14 archvillain 2026-08-15 26/1300 2026-08-18 13:37 by phantomgost
[»ù½ðÉêÇë] ÄÄλÀϸçÖªµÀ½ñÄêµÄ¹ú×ÔÈ»¾ßÌåÄÄÒ»Ìì·Å°ñ£¿ +13 Ldrop2023 2026-08-13 16/800 2026-08-18 12:25 by µí·Û°áÔ˹¤
[»ù½ðÉêÇë] 93BebMhtakhǰºó11λ¿ªÍ·¶¼ÊÇ´óд +4 ÇÒÌý»¢Ð¥ 2026-08-17 5/250 2026-08-18 00:49 by ²Ì°ô°ôÇ…
[»ù½ðÉêÇë] ¸Ð¾õÊÇÏÂÖܷŰñÁË +6 angus9576 2026-08-17 11/550 2026-08-17 23:57 by angus9576
[»ù½ðÉêÇë] ½ñÌìϵͳ¶à´Îά»¤£¬Ã÷ÌìºÜ¿ÉÄܷŰñ£¡ +8 zju2000 2026-08-16 9/450 2026-08-17 12:20 by lmz0216
[¾«Ï¸»¯¹¤] ÕÐÆ¸ ½ðÊôƽĥҺ£¬Å×¹âÒºÑз¢¹¤³Ìʦ +3 СÌì0311 2026-08-14 3/150 2026-08-16 07:31 by H9PLUS
[»ù½ðÉêÇë] ¸÷λµÀÓÑ£¬ÎÒҪȥÀ¥Ã÷Íæ¼¸Ì죬»ØÀ´¼û¡£ +7 Tide man 2026-08-14 8/400 2026-08-15 01:11 by arzu_hma
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û