科研之友
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摘要
A steady-state creep equation is commonly used in the analysis of superplastic forming or other elevated temperature forming processes. However, in Hot Metal Gas Forming of tubes, the effective stress increases as tube diameter expands and wall thickness decreases, and a steady-state creep condition does not exist. Thus, non-steady-state creep behavior of materials becomes important. This paper presents some experimental results on transient creep behavior of a magnesium alloy, and provides an analysis on transient creep behavior and its application in tube forming mechanics. It is verified that non-steady-state creep plays important role in the gas tube forming at elevated temperatures.
- 出版日期2007-8
