Serrated Yielding in Cu-1%Cd Alloy
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- Dr Settivari Nagarjuna
- Emeritus Professor Terry Evans
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| Author(s) | | Evans JT; Nagarjuna S; Anozie FN |
| Publication type | | Article |
| Journal | | Materials Science and Technology |
| Year | | 2003 |
| Volume | | 19 |
| Issue | | 12 |
| Pages | | 1661-1664 |
| ISSN (print) | | 0267-0836 |
| ISSN (electronic) | | 1743-2847 |
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| Full text for this publication is not currently held within this repository. Alternative links are provided below where available. |
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| The influence of grain size and temperature on the serration patterns of the Portevin-Le Chatelier (PLC) effect and on the yield and flow stresses in a Cu-1 wt-%Cd alloy was investigated in the temperature range 150 to 360 � C. Two kinds of serration patterns were observed in this alloy. Type I occurred at lower temperatures and its yield points are moderately spaced. Type II consists of regular jerky flow observed athigher temperatures. The Hall-Petch equation is obeyed over the temperature range in which jerky flow occurs. The Hall-Petch parameter k (ε) is observed to show a local maximum in the temperature range where serrated flow is first observed. The PLC effect is associated with the solute- dislocation interactions, implying that k (ε) contains a component associated with grain size dependent dislocation storage. |
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| Publisher | | Maney Publishing |
| URL | | http://dx.doi.org/10.1179/026708303225009481 |
| DOI | | 10.1179/026708303225009481 |
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