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| Discussion about heat treatment process of X20Cr13 blade steel for gas turbine |
| WANG Ji-hong， ZHANG Li-na， CHEN De-li， QI Yue， CAO Li-hong |
| Technical Center， Fushun Special Steel Co.， Ltd.， Fushun 113001， China |
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Abstract Different heat treatment processes were adopted to investigate the mechanical properties at room temperature， FATT and intergranular fracture rate of X20Cr13 blade steel. The results showed that the strength of the material increased with the increase of quenching temperature when the temper temperature was same. However， the impact toughness， FATT50 and intergranular fracture rate decreased. Good comprehensive mechanical properties could be obtained under heat treatment conditions of quenching at 970 ℃ and tempering at 670 ℃， which were suitable for the actual production.
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Received: 13 June 2019
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2020, Vol. 38 
