scholarly journals Enhancement of Strength and Ductility in Bulk Nanocrystalline Metals

2004 ◽  
Author(s):  
T Nieh ◽  
C Schuh ◽  
M Caturla ◽  
A Hodge
Keyword(s):  
Nanocrystalline Metals ◽  
Bulk Nanocrystalline ◽  
Strength And Ductility

DEFORMATION MECHANISM OF BULK NANOCRYSTALLINE NI PREPARED BY PLASMA EVAPORATION METHOD

2009 ◽  
Vol 23 (06n07) ◽  
pp. 1640-1645 ◽  
Author(s):  
JIANQIU ZHOU ◽  
RONGTAO ZHU ◽  
ZHENZHONG ZHANG
Keyword(s):  
Deformation Mechanism ◽  
Rate Sensitivity ◽  
Bulk Sample ◽  
Evaporation Method ◽  
Dislocation Glide ◽  
Before And After ◽  
Bulk Nanocrystalline ◽  
Evolution Of Microstructure ◽  
Strength And Ductility ◽  
Main Operating

Bulk nanocrystalline Ni samples were prepared by plasma evaporation method combined with hot pressure sintering. The compressive mechanical properties of the bulk samples were tested under quasi-static strain rates at room temperature and the evolution of microstructure of bulk sample before and after compression was studied. The experimental results indicated that the bulk samples show a good combination of strength and ductility and have obvious strain rate sensitivity. Both dislocation glide mediated and grain boundary mediated deformation mechanism were found to be main operating deformation mechanisms for the bulk samples based on the mechanical behaviors and grain refinement after compression.

scholarly journals Processing of Bulk Nanocrystalline Metals at the US Army Research Laboratory

10.3791/56950 ◽  
2018 ◽  
Author(s):  
Vincent H. Hammond ◽  
Billy C. Hornbuckle ◽  
Anit K. Giri ◽  
Anthony J. Roberts ◽  
Thomas L. Luckenbaugh ◽  
...  
Keyword(s):  
Research Laboratory ◽  
Nanocrystalline Metals ◽  
Army Research Laboratory ◽  
Us Army ◽  
The Us ◽  
Bulk Nanocrystalline

scholarly journals An Insight into Machining of Thermally Stable Bulk Nanocrystalline Metals

2018 ◽  
Vol 20 (12) ◽  
pp. 1800405 ◽  
Author(s):  
Vincent H. Hammond ◽  
Thomas L. Luckenbaugh ◽  
Michael Aniska ◽  
David M. Gray ◽  
Joshua A. Smeltzer ◽  
...  
Keyword(s):  
Nanocrystalline Metals ◽  
Thermally Stable ◽  
Bulk Nanocrystalline ◽  
Insight Into

scholarly journals Free volumes in bulk nanocrystalline metals studied by the complementary techniques of positron annihilation and dilatometry

2012 ◽  
Vol 407 (14) ◽  
pp. 2670-2675 ◽  
Author(s):  
Roland Würschum ◽  
Bernd Oberdorfer ◽  
Eva-Maria Steyskal ◽  
Wolfgang Sprengel ◽  
Werner Puff ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Nanocrystalline Metals ◽  
Complementary Techniques ◽  
Bulk Nanocrystalline

scholarly journals Deformation twinning in bulk nanocrystalline metals: Experimental observations

JOM ◽  
2008 ◽  
Vol 60 (9) ◽  
pp. 60-64 ◽  
Author(s):  
Y. T. Zhu ◽  
X. Z. Liao ◽  
X. L. Wu
Keyword(s):  
Deformation Twinning ◽  
Nanocrystalline Metals ◽  
Bulk Nanocrystalline

Processing, Strength and Ductility of Bulk Nanostructured Metals Produced by Sever Plastic Deformation: An Overview

2009 ◽  
Vol 633-634 ◽  
pp. 131-150 ◽  
Author(s):  
A. Mashreghi ◽  
L. Ghalandari ◽  
M. Reihanian ◽  
M.M. Moshksar
Keyword(s):  
Plastic Deformation ◽  
Nanocrystalline Metals ◽  
Nanostructured Metals ◽  
Ultrahigh Strength ◽  
Nano Scale ◽  
Ultrafine Grained ◽  
Structural Applications ◽  
Sever Plastic Deformation ◽  
Processing Techniques ◽  
Strength And Ductility

Nanostructured metals which have nano-scale microstructure are classified into ultrafine grained metals and nanocrystalline metals. In recent years, many processing techniques have been developed for producing nanostructured metals. Nanostructured metals possess ultrahigh strength but the low ductility is an important limitation on development of these materials for structural applications. This paper overviews various methods of producing nanostructured metals and recent investigations of strength and ductility of nanostructured metals processed by sever plastic deformation.

scholarly journals Departing from the mutual exclusiveness of strength and ductility in nanocrystalline metals with vacancy induced plasticity

2018 ◽  
Vol 157 ◽  
pp. 39-43 ◽  
Author(s):  
Zahabul Islam ◽  
Baoming Wang ◽  
Khalid Hattar ◽  
Huajian Gao ◽  
Aman Haque
Keyword(s):  
Nanocrystalline Metals ◽  
Strength And Ductility

scholarly journals Strategy for Electrodeposition of Highly Ductile Bulk Nanocrystalline Metals with a Face-Centered Cubic Structure

2014 ◽  
Vol 55 (12) ◽  
pp. 1859-1866 ◽  
Author(s):  
Isao Matsui ◽  
Yorinobu Takigawa ◽  
Daisaku Yokoe ◽  
Takeharu Kato ◽  
Tokuteru Uesugi ◽  
...  
Keyword(s):  
Face Centered Cubic ◽  
Nanocrystalline Metals ◽  
Cubic Structure ◽  
Face Centered ◽  
Bulk Nanocrystalline
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