Znn3bq.jpeg
²é¿´: 2241  |  »Ø¸´: 102
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

aexlh

гæ (СÓÐÃûÆø)


[½»Á÷] ÔöÇ¿Ïà·Ö²¼¶Ô½ðÊô»ù¸´ºÏ²ÄÁϵÄÓ°Ïì-Progress in Materials ScienceÎÄÕÂ

http://www.sciencedirect.com/sci ... i/S0079642515000201
¡¶Î¢¹Û·Ç¾ùÔȸ´ºÏ²ÄÁÏ£ºÔöÇ¿Ïà¾ùÔÈ·Ö²¼×îºÃÂ𣿡·(Microstructurally Inhomogeneous Composites: Is a homogeneous reinforcement distribution optimal£¿)
Since the 1960s, it has been a common practice worldwide to pursue a homogeneous distribution of reinforcements within a matrix material, discontinuous metal matrix composites (DMMCs) in particular. Taking an overview of the worldwide activities in DMMC research, despite many favourable attributes such as improved specific strength, stiffness and superior wear resistance, DMMCs with a homogeneous microstructure tend to exhibit a very low room temperature damage tolerance even with a highly ductile matrix material such as aluminium. In this review, a range of uniquely multi-scale hierarchical structures have been successfully designed and fabricated by tailoring reinforcement distribution for DMMCs in order to obtain superior performance. A variety of specific microstructures that were developed in Al, Mg, Cu, Fe, Co and TiAl matrices indicate that there must be adequate plastic regions among the reinforcements to blunt or deflect cracks if one wants to toughen DMMCs. Following this path, aided by theoretical analyses, the most recent success is the design and fabrication of a network distribution of in situ reinforcing TiB whiskers (TiBw) in titanium matrix composites (TMCs), where a tailored three-dimensional (3D) quasi-continuous network microstructure displays significant improvements in mechanical properties. This resolves the brittleness surrounding TMCs fabricated by powder metallurgy. It is the large reinforcement-lean regions that remarkably improve the composite¡¯s ductility by bearing strain, blunting the crack and decreasing the crack-propagation rate. The fracture, strengthening and toughening mechanisms are comprehensively elucidated in order to further understand the advantages of such an inhomogeneous microstructure, and to justify the development of novel techniques to produce such inhomogeneous microstructures. This approach opens up a new horizon of research and applications of DMMCs and can be easily extended to general multi-phase composites with enhanced physical and mechanical properties.
Keywords: Metal matrix composites; inhomogeneous microstructure; hierarchical structures; bi-continuous microstructure; network microstructure; mechanical properties
»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 : PMS-MIC-huang.pdf
  • 2015-03-23 19:14:52, 13.51 M

» ±¾ÌûÒÑ»ñµÃµÄºì»¨£¨×îÐÂ10¶ä£©

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹ØÉ̼ÒÍÆ¼ö: (ÎÒÒ²ÒªÔÚÕâÀïÍÆ¹ã)

» ÇÀ½ð±ÒÀ²£¡»ØÌû¾Í¿ÉÒԵõ½:

²é¿´È«²¿É¢½ðÌù

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

miketyson

½ð³æ (ÕýʽдÊÖ)


¡ï
aexlh(½ð±Ò+1): лл²ÎÓë
Ëͺ컨һ¶ä
¹¤´ó²ÄÁÏѧԺ³öÀ´µÄ·¹ý£¬×£¸£Ð£ÓÑÁË£¡
99Â¥2015-03-24 14:05:53
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 103 ¸ö»Ø´ð
¼òµ¥»Ø¸´
2015-03-23 19:18   »Ø¸´  
aexlh(½ð±Ò+1): лл²ÎÓë
¡£ [ ·¢×ÔСľ³æ¿Í»§¶Ë ]
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ²ÄÁϸ´ÊÔÇóµ÷¼Á +21 xhhdjdjsjks 2026-04-09 21/1050 2026-04-13 08:43 by lhj2009
[¿¼ÑÐ] Ò»Ö¾Ô¸085802 323·ÖÇóµ÷¼Á +12 drizzle_9 2026-04-12 13/650 2026-04-13 01:15 by ÐÒÃâ ..
[½Ìʦ֮¼Ò] ɽ¶«Ë«·ÇԺУ¿¼ºË³¬¼¶ÎÞµ×Ïߣ¬Áìµ¼ÐÒÔÖÀÖ»ö£¬½ÌʦÔâÑê¿Ö +3 qut2026 2026-04-11 7/350 2026-04-12 20:24 by qut2026
[¿¼ÑÐ] 291Çóµ÷¼Á +8 ¹ØÒä±±. 2026-04-11 8/400 2026-04-12 09:32 by ÄæË®³Ë·ç
[¿¼ÑÐ] È˹¤ÖÇÄÜ320µ÷¼Á08¹¤À໹Óлú»áÂð +12 Õñ¡ªTZ 2026-04-10 12/600 2026-04-12 07:54 by wj165256
[ÕÒ¹¤×÷] ɽ¶«¸ßУ½Ìʦ¿¼ºË³¬¼¶ÎÞµ×Ïߣ¬Ô±¹¤¹ý²»ÏÂÈ¥À² +4 qut2026 2026-04-09 9/450 2026-04-12 00:54 by qut2026
[¿¼ÑÐ] ҩѧר˶µ÷¼Á +8 ? һ·Éú?»¨? 2026-04-10 10/500 2026-04-11 21:21 by zhouxiaoyu
[¿¼ÑÐ] 270Çóµ÷¼Á +14 ÑîÀÖ369 2026-04-11 14/700 2026-04-11 20:16 by À¶ÔÆË¼Óê
[¿¼ÑÐ] Çóµ÷¼Á +11 ôæôæÒ»ÊéÉú 2026-04-09 11/550 2026-04-11 19:57 by ÄæË®³Ë·ç
[¿¼ÑÐ] Çóµ÷¼Á +10 Á§ÜÔÒ»¶¨Éϰ¶ 2026-04-10 10/500 2026-04-11 13:31 by 1005715100
[¿¼ÑÐ] 296Çóµ÷¼Á +6 Íô£¡£¿£¡ 2026-04-09 6/300 2026-04-11 11:25 by zhq0425
[¿¼ÑÐ] 085500Çóµ÷¼Á²ÄÁÏ +10 Ò×11122 2026-04-09 10/500 2026-04-11 10:39 by maddjdld
[¿¼ÑÐ] 281Çóµ÷¼Á +11 ¾õµÃºÃµÄ°É 2026-04-10 11/550 2026-04-11 09:35 by ÄæË®³Ë·ç
[¿¼ÑÐ] 083200 305·Ö Çó¶þÂÖµ÷¼Á ²»½ÓÊÜ¿çרҵ +9 Claireyyyy 2026-04-09 10/500 2026-04-10 21:21 by Claireyyyy
[¿¼ÑÐ] 284Çóµ÷¼Á +9 ÈÃÎÒÉϰ¶°É°¢Î÷ 2026-04-09 11/550 2026-04-10 19:18 by ¾¸jing
[ÂÛÎÄͶ¸å] mdpiСÐÞrvrʱ¼äËÄÎåÌìÁË 20+3 ¹þ¹þhigh 2026-04-08 5/250 2026-04-10 16:02 by ±±¾©À³ÒðÈóÉ«
[¿¼ÑÐ] 298Çóµ÷¼Á +13 ¶¤¶£ß˶¬¹Ï 2026-04-09 13/650 2026-04-10 15:49 by jiajinhpu
[¿¼ÑÐ] 293µ÷¼Á +25 yj1221 2026-04-08 26/1300 2026-04-10 15:02 by ²ñС°×
[¿¼ÑÐ] ¿¼Ñе÷¼Á-²ÄÁÏÀà-284 +28 Ïë»»ÊÖ»ú²»Ïë½âÊ 2026-04-08 28/1400 2026-04-09 20:08 by µ¹Êý321?
[¿¼ÑÐ] 334Çóµ÷¼Á +16 Riot2025 2026-04-08 17/850 2026-04-09 09:28 by wdyheheeh
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û