The Influence of Pulsating Strain Rates on the Superplastic Deformation Behaviour of Al-Alloy AA5083 Investigated by Means of Cone Test

Grain refinement and superplastic deformation behavior of Zn-Al alloys were investigated in this study. To obtain fine grain size in Zn-0.3Al alloys, rolling and equal channel angular pressing (ECAP) were conducted at temperatures from 40 to 160°C after casting and homogenization heat treatment. Material processing maps for Zn-0.3Al alloy were constructed from a series of compression tests conducted at temperatures from RT to 200°C and strain rates from 3×10-2 to 101 s-1. Superplasticity of ECAPed specimens were evaluated at the temperature of 100°C under the strain rate of 2×10-4 s-1. After ECAP of the Zn-0.3Al alloy, elongation was dramatically increased up to 500%. The effects of ECAP on the texture and anisotropy in the superplastic deformation bebavior were found to be negligible.

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Compressive deformation behaviour of Al alloy (2014)–10wt.% SiCp composite: Effects of strain rates and temperatures

Materials Science and Engineering A ◽

10.1016/j.msea.2011.09.078 ◽

2011 ◽

Vol 530 ◽

pp. 225-232 ◽

Cited By ~ 27

Author(s):

Aruna Patel ◽

S. Das ◽

B.K. Prasad

Keyword(s):

Deformation Behaviour ◽

Compressive Deformation ◽

Al Alloy ◽

Strain Rates

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Superplastic Deformation Mechanisms at High Strain Rates in Mechanically Alloyed Aluminum IN905XL.

Journal of the Japan Society of Powder and Powder Metallurgy ◽

10.2497/jjspm.40.337 ◽

1993 ◽

Vol 40 (3) ◽

pp. 337-340

Author(s):

Kenji Higashi ◽

Takaya Okada ◽

Toshiji Mukai ◽

Shinji Tanimura

Keyword(s):

Superplastic Deformation ◽

High Strain ◽

Deformation Mechanisms ◽

Strain Rates ◽

High Strain Rates ◽

Mechanically Alloyed

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Dynamic and Quasi-Static Compressive Deformation Behaviour of Polyimide Foam at Various Elevated Temperature

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.566.158 ◽

2014 ◽

Vol 566 ◽

pp. 158-163 ◽

Cited By ~ 1

Author(s):

A. Yosimoto ◽

Hidetoshi Kobayashi ◽

Keitaro Horikawa ◽

Keiko Watanabe ◽

Kinya Ogawa

Keyword(s):

Compressive Strength ◽

Room Temperature ◽

Deformation Behaviour ◽

Testing Machine ◽

Negative Temperature ◽

Strain Rates ◽

Compression Tests ◽

Hopkinson Pressure Bar ◽

Universal Testing ◽

Pressure Bar

In order to clarify the effect of strain rate and test temperature on the compressive strength and energy absorption of polyimide foam, a series of compression tests for the polyimide foam with two different densities were carried out. By using three testing devices, i.e. universal testing machine, dropping weight machine and sprit Hopkinson pressure bar apparatus, we performed a series of compression tests at various strain rates (10-3~103s-1) and at several test temperatures in the range of room temperature to 280 ̊C. At over 100 s-1, the remarkable increase of flow stress was observed. The negative temperature dependence of strength was also observed.

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