Effect of cooling rate after solution on microstructure and creep properties of single crystal superalloy DD3

The effect of different cooling rate on microstructure and creep properties of DD3 single crystal superalloy after solution treatment was investigated. 10 °C/min cooling rate is adverse to the creep properties performed at all the conditions of 760 °C/786 MPa, 982 °C/210 MPa and 1038 °C/161 MPa. The best creep lives can be obtained with 149 °C/min cooling rate specimens at 760 °C/786 MPa. At 982 °C/210 MPa and 1038 °C/161 MPa, a cooling rate of...