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STUDY ON THE HOT DEFORMATION BEHAVIOR AND HOT WORKABILITY OF Mg-Y-Nd-Zr ALLOY |
Wei-Neng TANG;; |
中国科学院金属研究所环境腐蚀中心 |
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Cite this article:
Wei-Neng TANG. STUDY ON THE HOT DEFORMATION BEHAVIOR AND HOT WORKABILITY OF Mg-Y-Nd-Zr ALLOY. Acta Metall Sin, 2006, 42(10): 1096-1100 .
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Abstract The deformation behaviour of Mg-Y-Nd-Zr alloy at temperatures of 300-500℃ and strain rates of 0.001-1s-1 has been studied by compressive tests. Processing map of this alloy was established on the basis of Dynamic Material Model; it is suggested that, with microstructural observation, the processing map of this alloy could be characterized as the following four domains: First, dynamic recrystallization (DRX) domain at 450-500℃ and about 0.01s-1. Second, boundary cracking domain at temperatures higher than 450℃ and strain rates of about 0.005s-1. Third, flow instability domain probably due to mechanical twinning at temperature lower than 350℃ and strain rate of about 0.01s-1. Last, shearing fracture at about 450℃ and strain rates higher than 0.5s-1.
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Received: 15 May 2006
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