CaltechAUTHORS
  A Caltech Library Service

Quasi-Static and High-Strain-Rate Experimental Microstructural Investigation of a High-Strength Aluminum Alloy

Salem, H. G. and Lee, William M. and Bodelot, Laurence and Ravichandran, G. and Zikry, M. A. (2012) Quasi-Static and High-Strain-Rate Experimental Microstructural Investigation of a High-Strength Aluminum Alloy. Metallurgical and Material Transactions A, 43A (6). pp. 1895-1901. ISSN 1073-5623 . http://resolver.caltech.edu/CaltechAUTHORS:20120530-110330711

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20120530-110330711

Abstract

The damage mechanisms associated with the deformation and failure of high-strength Al 2139-T8 were investigated by optical and scanning electron microscopy at strain rates ranging from the quasi-static, 10^(−3) s^(−1), to the high strain rate, at approximately 2350 s^(−1). Deformation was more uniform at the lowest strain rate of 10^(−3) s^(−1), where nanocracking nucleated at coarse inclusions and clustered dispersed particles. Deformation was more localized as the strain-rate increased, with microvoid nucleation, resulting from particle-matrix interfacial decohesion and particle cracking, observed at higher strain rates. Dispersed particles and coarse inclusions were observed on the fracture surfaces of the deformed samples subjected to high rates of strain. Coarse inclusions were associated with inclusion cracking and shear deformation. The dispersed particles were associated with dimpled rupture, and the orientation of the particles determined the amount of plasticity prior to failure of the alloy.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1007/s11661-011-1064-6DOIUNSPECIFIED
http://www.springerlink.com/content/w328jhj3k7865488/PublisherUNSPECIFIED
Additional Information:© 2012 Minerals, Metals & Materials Society and ASM International. Manuscript submitted July 13, 2011. Article published online January 27, 2012. Support from JIEDDO and the U.S. Army Research Office Grant No. ARO W911 NF-06-1-0472 are gratefully acknowledged. W.M. Lee also acknowledges support from the National Defense Science and Engineering Graduate (NDSEG) Fellowship.
Group:GALCIT
Funders:
Funding AgencyGrant Number
JIEDDOUNSPECIFIED
Army Research Office (ARO)W911 NF-06-1-0472
National Defense Science and Engineering Graduate (NDSEG) FellowshipUNSPECIFIED
Record Number:CaltechAUTHORS:20120530-110330711
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120530-110330711
Official Citation:Quasi-Static and High-Strain-Rate Experimental Microstructural Investigation of a High-Strength Aluminum Alloy H. G. Salem, William M. Lee, Laurence Bodelot, G. Ravichandran and M. A. Zikry pp. 1895-1901
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:31711
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:30 May 2012 20:05
Last Modified:29 Sep 2016 23:16

Repository Staff Only: item control page