Flow behavior of a modified cobalt alloy at high temperature
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摘要: 在Gleeble-1500熱模擬機上,采用等溫壓縮試驗,研究了一種含Ti和Al的新型鈷基耐熱合金在850～1150℃溫度范圍的壓縮變形行為.實驗結果表明：該合金具有良好的抗高溫流變性能,在850℃及應變速率0.0021～2.1 s-1范圍時其峰值流變應力可以達到360～475MPa.合金的流變行為可用Zener-Hollomon參數來描述.Abstract: The isothermal compression deformation behavior of a modified cobalt alloy was investigated at temperatures from 850 to 1 150 12 with Gleeble-1500 simulation machine. The experimental results show that the alloy has excellent high-temperature mechanical properties. Its maximum flow stress at 850 12 is in the range of 360-475 MPa when the strain rate is between 0. 0021 and 2.1 s-1. The flow stress of the alloy during high temperature deformation can be described by Zener-Hollomon parameter.
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