NDLI: Evolution of a martensitic structure in a Cu–Al alloy during processing by high-pressure torsion

Content Provider	Springer Nature Link
Author	Zhang, G. F. Sauvage, X. Wang, J. T. Gao, N. Langdon, T. G.
Copyright Year	2013
Abstract	A Cu-11.8 wt% Al alloy was quenched in iced water from a high temperature (850 °C) to introduce a martensitic phase and then the alloy was processed using quasi-constrained high-pressure torsion (HPT). The micro-hardness and the microstructures of the unprocessed and severely deformed materials were investigated using a wide range of experimental techniques (X-ray diffraction, optical microscopy, scanning electron microscopy, transmission electron microscopy, and high- resolution TEM). During HPT, a stress-induced martensite–martensite transformation occurs and an $$ \alpha^{\prime}_{1} $$ martensite phase is formed. In the deformed material, there are nanoscale deformation bands having high densities of defects and twins in the $$ \alpha^{\prime}_{1} $$ martensite. It was observed that a high density of dislocations became pinned and accumulated in the vicinity of twin boundaries, thereby demonstrating a strong interaction between twin boundaries and dislocations during the HPT process.
Starting Page	4613
Ending Page	4619
Page Count	7
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	48
Issue Number	13
e-ISSN	15734803
Language	English
Publisher	Springer US
Publisher Date	2013-01-24
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Materials Science Characterization and Evaluation of Materials Polymer Sciences Continuum Mechanics and Mechanics of Materials Crystallography Mechanics
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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