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nanopowders

金虫 (正式写手)

木船长


ufoer(金币+1,VIP+0):谢谢交流! 3-3 03:37
我上传过一篇老外的综述性文章,楼主可以看看,很有帮助

Mechanical properties of nanocrystalline materials

M.A. Meyers *, A. Mishra, D.J. Benson
Department of Mechanical and Aerospace Engineering, Materials Science and Engineering Program,
Mail Code 0411, University of California, San Diego La Jolla, CA 92093, United States
Received 1 November 2004; revised 1 May 2005; accepted for publication 1 August 2005

Abstract
The mechanical properties of nanocrystalline materials are reviewed, with emphasis on their constitutive
response and on the fundamental physical mechanisms. In a brief introduction, the most
important synthesis methods are presented. A number of aspects of mechanical behavior are discussed,
including the deviation from the Hall–Petch slope and possible negative slope, the effect
of porosity, the difference between tensile and compressive strength, the limited ductility, the tendency
for shear localization, the fatigue and creep responses. The strain-rate sensitivity of FCC metals
is increased due to the decrease in activation volume in the nanocrystalline regime; for BCC

http://www.namipan.com/d/c816872 ... 077c63c72d01e355a00

[ Last edited by nanopowders on 2009-3-6 at 23:41 ]
我们永远不知道自己有多高,直到被召唤着站起来
11楼2008-11-25 23:10:37
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shinken

木虫 (小有名气)

楼上的,在哪里链接啊?
脚踏实地,宁静致远
12楼2008-11-26 00:18:46
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mcdonlean

木虫 (著名写手)

屈服强度还与材料内部的织构有关,如果大部分的晶粒取向都有利于滑移的话,屈服强度应该会比较低。
13楼2008-11-26 05:38:20
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kp215

金虫 (小有名气)

我也认为此合金有点反常,先孪生后滑移,不符合霍尔-配奇关系也可以了解的,请问合金是不是在高温下变形??
14楼2009-02-28 22:13:30
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tottizl

铁虫 (初入文坛)

多看看书:
美国很多大学都用这本:Richard W. Hertzberg
15楼2009-03-03 04:48:31
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