Effect of the Rate of Multiaxial Compression at Room Temperature on the Evolution of Microstructure of Commercial-Purity Aluminum


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Abstract

Commercial-purity aluminum of grade 1050 obtained by uniaxial or multiaxial compression at room temperature at deformation rates from 1.2 × 103 to 1.0 × 10 − 3 sec − 1 is studied. The true strain per one pass is kept constant while the total strain amounts to 1.6 in uniaxial deformation and to 3.0 in multiaxial one. The microstructure is determined using a transmission electron microscope. The high-rate deformation is shown to be the most effective for refining the structure due to elevation of the dislocation density and suppression of the dynamic recovery.

About the authors

Y. Yang

School of Material Science and Engineering, Central South University; Institute of Fluid Physics, China Academy of Engineering Physics; Key Laboratory of the Ministry of Education for Nonferrous Metal Materials Science and Engineering, Central South University

Email: petroprom2013@yandex.ru
China, Changsha; Mianyang; Changsha

S. J. Yang

School of Material Science and Engineering, Central South University

Email: petroprom2013@yandex.ru
China, Changsha

Z. Wang

School of Material Science and Engineering, Central South University

Email: petroprom2013@yandex.ru
China, Changsha

X. F. Gao

School of Material Science and Engineering, Central South University

Email: petroprom2013@yandex.ru
China, Changsha

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