| 查看: 2208 | 回复: 102 | |||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | |||
[交流]
增强相分布对金属基复合材料的影响-Progress in Materials Science文章
|
|||
|
http://www.sciencedirect.com/sci ... i/S0079642515000201 《微观非均匀复合材料：增强相均匀分布最好吗？》(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 |
回复此楼» 本帖附件资源列表
-
欢迎监督和反馈：小木虫仅提供交流平台，不对该内容负责。
本内容由用户自主发布，如果其内容涉及到知识产权问题，其责任在于用户本人，如对版权有异议，请联系邮箱：xiaomuchong@tal.com - 附件 1 : PMS-MIC-huang.pdf
2015-03-23 19:14:52, 13.51 M
» 本帖已获得的红花（最新10朵）
miketyson» 猜你喜欢
南京林业大学国家工程中心李海涛教授课题组招收研究生
已经有11人回复
-
拟解决的关键科学问题还要不要写
已经有20人回复
-
建筑环境与结构工程论文润色/翻译怎么收费?
已经有54人回复
-
[导师招生]全奖博士生招生—香港都会大学
已经有0人回复
-
一志愿中石油（华东），0854电子信息专硕392分，求调剂
已经有0人回复
-
西京学院-土木水利2026研究生-结构抗震与智能检测
已经有0人回复
-
西京学院-土木水利2026研究生-高性能结构与智能材料
已经有0人回复
-
【调剂申请】土木水利（总分314，一志愿哈工大）
已经有0人回复
» 本主题相关商家推荐: (我也要在这里推广)
» 抢金币啦！回帖就可以得到:
-
绍兴大学博士教师招聘1位（化学化工相关）
+5/255
-
农业信息工程技术（专硕）招收调剂 沈阳农业大学
+1/179
-
上海真诚脱单，这是一篇很认真的相亲贴，找一个灵魂伴侣
+1/167
-
香港中文大学（深圳）靳羽华教授交叉实验室高薪诚聘博士后（光致变色方向）
+2/130
-
西南交通大学医学院招收生物医学工程和材料与化工专业硕士研究生
+1/88
-
招收调剂生，动物医学专业
+1/84
-
中飞院航空锂电池团队接受硕士生调剂
+1/82
-
祈福2026国基面上项目
+5/80
-
浙江大学侯阳教授团队诚聘博士后---高性能固态电解质与固态电池器件设计
+1/78
-
湖南大学微生物结构与功能实验室2026年计划招收博士研究生
+1/15
-
中科院物理所二维材料方向招收推免研究生
+1/15
-
浙江中医药大学副校长团队招聘药学/生物信息学等方向高校教师7名，报名通道已开启
+1/12
-
【博士招生】天津理工大学国家杰青王铁课题组招收2026年博士研究生
+1/7
-
国家级人才团队诚聘生物信息相关专业的科研助理
+1/4
-
5科大招收材料专业硕士
+1/4
-
中国科学院上海硅酸盐研究所招聘科研助理
+1/3
-
【科研干货】纳米抗体凭什么成为实验室“新宠”？附优质制备服务商参考
+1/2
-
26申博自荐
+1/1
-
北京高校副校长团队招收机械类，环境类学硕和专硕
+1/1
-
上海高校教授长年招收硕士和博士研究生-动力工程与工程热物理
+1/1
99楼2015-03-24 14:05:53
简单回复
江南的竹2楼
2015-03-23 19:18
回复
aexlh(金币+1): 谢谢参与
。 [ 发自小木虫客户端 ]
