The superplastic properties of conventionally cast and rapidly solidified magnesium alloy AZ91 have been studied. The latter material had by far the best sup'erplastic properties, and elongations of at least 1000% were obtained in the temperature range 275-300 °C. Formation of pores during superplas
Serrated flow in magnesium alloy AZ91
✍ Scribed by C. Corby; C.H. Cáceres; P. Lukáč
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 78 KB
- Volume
- 387-389
- Category
- Article
- ISSN
- 0921-5093
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✦ Synopsis
Serrated flow has recently been observed in the ternary Mg-9 wt.% Al-1 wt.% Zn alloy AZ91 at room temperature. Binary and ternary alloys with various contents of Zn and Al have, therefore, been tested to determine the extent to which the individual solutes, Al or Zn, are responsible for the serrations. The results show that jerky flow develops only in alloy AZ91 suggesting that both solutes are active. Possible roles played by the Al and Zn atoms in solution are discussed in terms of current models.
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