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The paper contains a discussion of the creep law of metals proposed by Andrade. The discussion is based on the law of E. A. DAVIS [6] generalized to the case of a variable temperature U = B(T)EM(T) EN(T), where B(T), m (T), n (T) denote the plastic modulus, the strain hardening exponent and the stra...
| Published in: | Engineering Transactions |
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| Main Author: | |
| Format: | Article |
| Language: | English |
| Published: |
Institute of Fundamental Technological Research Polish Academy of Sciences
1965-12-01
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| Online Access: | https://et.ippt.pan.pl/index.php/et/article/view/2784 |
| Summary: | The paper contains a discussion of the creep law of metals proposed by Andrade. The discussion is based on the law of E. A. DAVIS [6] generalized to the case of a variable temperature U = B(T)EM(T) EN(T), where B(T), m (T), n (T) denote the plastic modulus, the strain hardening exponent and the strain-rate sensitivity, respectively. These quantities depend all on the absolute temperature. This law is valid for technically pure polycrystalline metals of rectangular plane-centric network, such as Al, Cu and Pb.
As a result of discussion it is found that for the first stage of creep Andrade's law is valid in a definite region of elevated temperatures, For aluminium and copper these regions are located near the temperature 6 A R 0,65 in the homologous scale.
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| ISSN: | 0867-888X 2450-8071 |