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A Grain Boundary Engineering Approach to Promote Special Boundaries in a Pb-base Alloy

Published online by Cambridge University Press:  01 February 2011

D.S. Lee ,
H.S. Ryoo  and
S.K. Hwang
D.S. Lee
Affiliation:
School of Materials Science and Engineering, Inha University, #253, Yonghyun-Dong, Nam-Gu, Incheon, 402-751, Korea
H.S. Ryoo
Affiliation:
Jointly appointed by the Center for Advanced Aerospace Materials, Pohang University of Science and Technology, Pohang, Korea
S.K. Hwang
Affiliation:
Jointly appointed by the Center for Advanced Aerospace Materials, Pohang University of Science and Technology, Pohang, Korea
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Abstract

A grain boundary engineering approach was employed to improve the microstructure of a commercial Pb-base alloy for better performance in automobile battery application. Through a combination of cold working, recrystallization and subsequent thermomechanical-processing, it was possible to increase the fraction of the low ∑ coincidence site lattice boundaries up to 91% in addition to the substantial grain refinement. A preliminary electrochemical evaluation indicated a better corrosion resistance in the experimental material laden with the special boundaries. The high frequency of the coincidence site lattice boundaries in the specimens was interpreted in terms of the '∑3 regeneration' model proposed in previous works.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 730: Symposium V – Materials for Energy Storage, Generation, and Transport , 2002 , V5.6
Copyright
Copyright © Materials Research Society 2002

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