The tensile deformation and fracture behavior of a magnesium alloy nanocomposite reinforced with nickel

In this paper, the specific influence of quasi-isostatic forging and rolling of cryomilled powder on microstructural development and resultant tensile deformation and fracture behavior of aluminum alloy 5083 is highlighted and comparison made with the coarse grained counterpart. The specific influence and contribution of strain hardening to enhancing strength of the ultra-fine grain microstructure of the aluminum alloy is presented and discussed. It is shown that the capability of the ultra fine grain microstructure to recover strength through the mechanism of work hardening is quite similar to the conventionally processed counterpart. The influence and role of intrinsic microstructural features in governing tensile deformation and fracture behavior is elaborated upon. The viable microscopic mechanisms governing final fracture behavior is discussed in light of the competing and mutually interactive influences of nature of loading, intrinsic microstructural effects, and deformation kinetics. Key Words: aluminum alloy 5083, processing, microstructure, tensile properties, fracture

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The Tensile Deformation and Fracture Behavior of the Al-Al3Ni Eutectic Composites at Elevated Temperatures

Journal of the Japan Institute of Metals and Materials ◽

10.2320/jinstmet1952.45.7_745 ◽

1981 ◽

Vol 45 (7) ◽

pp. 745-751 ◽

Cited By ~ 2

Author(s):

Tetsuo Yano ◽

Osamu Yanagisawa

Keyword(s):

Fracture Behavior ◽

Elevated Temperatures ◽

Tensile Deformation ◽

Deformation And Fracture

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Tensile Deformation and Fracture Behavior of a Commercial Al Alloy with Nano-Sized Grains

Materials Science Forum ◽

10.4028/www.scientific.net/msf.449-452.589 ◽

2004 ◽

Vol 449-452 ◽

pp. 589-592 ◽

Cited By ~ 1

Author(s):

Si Young Chang ◽

Sang Ho Seo ◽

Seong Hee Lee ◽

Chang Seog Kang ◽

Sung Kil Hong ◽

...

Keyword(s):

Fracture Behavior ◽

Tensile Deformation ◽

Al Alloy ◽

Annealed Alloy ◽

Pressing Temperature ◽

Nano Structure ◽

Angular Pressing ◽

Deformation And Fracture ◽

Elongation To Failure ◽

5083 Al Alloy

The nano-structure in the commercial 5083 Al alloy was introduced by the equal channel angular pressing technique. The nano-sized grains of ~300 nm were obtained after 8 ECAPs at 373 K and 473 K. It was also obvious that much improvement in strength was obtained at lower pressing temperature, 373 K, than 473 K. In particular, there were mainly two different tensile characteristics; one was that the strength in the alloy ECA pressed at 373 K was much higher than that of as-annealed alloy but the elongation to failure was significantly smaller, while, in case of pressing at 473 K, the improvement in strength was found without sacrificing much of the elongation. The other was that the work hardening with increasing the amount of deformation was found in the alloy ECA pressed at 473 K. These tensile deformation characteristics were analyzed based on the observations of microstructure by TEM and fracture surface by FE-SEM.

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