발간논문

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Vol.34, No.3, 306 ~ 312, 1996
Title
Research Paper - Transformations - : A Study on the Grain Growth in Superplastic Zn - 22% Al Alloy in Cyclic Reverse Double Shear Creep
송태석T . S . Song, 지태구T . G . Ji, 최재하J . H . Choi, 조형호H . H . Jo, 김명한M . H . Kim
Abstract
The cyclic reverse double shear creep test was adopted to investigate the grain growth of Zn-22% Al superplastic alloy. The results represent that the shear specimens experience more increment of concurrent grain growth and consequently increase in grain size, as the test cycle increases. The results indicate that stress reversal effect is the major factor influencing grain growth in shear test. The relation between shear strain rate(γ˙) and grain size (d) could be expressed as follow, when the unit of γ˙ and d is 10-⁴/sec and ㎛, respectively : log γ˙=-1.2571og d-3.7
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