Abstract
The flow stress in tensile and compressive deformation has been determined in cast Mg, for a wide range of grain sizes between 36 μm and 1.5 mm. The grain size was varied by alloying Mg with small amounts of Zr. It was found that the 0.2% offset flow stress, σy, (MPa), varies with the grain size, d (m), as σy = 17.7 + 0.25 d-1/2 in tension, while σy, = -2.3 + 0.39 d-1/2 in compression. Possible reasons for the difference between tension and compression are discussed.
Original language | English |
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Pages (from-to) | 123-128 |
Number of pages | 6 |
Journal | Materials Science Forum |
Volume | 419-422 |
Issue number | I |
DOIs | |
Publication status | Published - 2003 |
Event | Proceedings of the Second Osaka International Conference on Platform Science and Technology for Advanced Magnesium Alloys 2003 - Osaka, Japan Duration: 2003 Jan 26 → 2003 Jan 30 |
Keywords
- Grain size
- Hall-Petch relationship
- Magnesium
- Yield stress
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering