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Acta Metall Sin  2006, Vol. 42 Issue (10): 1096-1100     DOI:
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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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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.
Key words:  Mg-Y-Nd alloy      hot deformation      processing map      hot workability      mechanical properties      
Received:  15 May 2006     
ZTFLH:  TG113.26  

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https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y2006/V42/I10/1096

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