Deformation Behavior of Ti-5.6Al-4.8Sn-2.0Zr-1.0Mo-0.35Si-0.85Nd Alloy in β/Quasi-β Forging Process

Deformation Behavior of Ti-5.6Al-4.8Sn-2.0Zr-1.0Mo-0.35Si-0.85Nd Alloy in β/Quasi-β Forging Process

The hot deformation behavior of Ti-5.6Al-4.8Sn-2.0Zr-1.0Mo-0.35Si-0.85 Nd alloy in β/quasi-β forging process was studied using isothermal compression tests over temperature range from 1040 ℃ to 1100 ℃ and strain rates form 0.001 s-1to 70 s-1The results show that the flow stress and microstructure ar...

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Veröffentlicht in:钢铁研究学报：英文版 2016-12 (12), p.1297-1302
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description The hot deformation behavior of Ti-5.6Al-4.8Sn-2.0Zr-1.0Mo-0.35Si-0.85 Nd alloy in β/quasi-β forging process was studied using isothermal compression tests over temperature range from 1040 ℃ to 1100 ℃ and strain rates form 0.001 s-1to 70 s-1The results show that the flow stress and microstructure are sensitive to thermomechanical parameters.The processing maps based on the dynamic materials model at strain of 0.3 and 0.7 were established.The optimum deformation thermomechanical parameters at a strain of 0.7 have two regions that exhibit the peak of power dissipation efficiency.One is the region of 1062-1100 ℃ and 10-3-10-1.5s-1; and another which represents dynamic recrystallization is 1040-1045 ℃ and 10-1.8-10-0.9s-1The instable region is located where the strain rate is larger than 1 s-1which corresponds to the mechanical instability.
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title Deformation Behavior of Ti-5.6Al-4.8Sn-2.0Zr-1.0Mo-0.35Si-0.85Nd Alloy in β/Quasi-β Forging Process
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