1. Central Iron and Steel Research Institute, Beijing 100081, China 2. Materials Research Center, Dong Fang Steam Turbine Works, Deyang 618000, Sichuan, China 3. No.704 Institute of China Shipbuilding Industry Corporation, Shanghai 200031, China
Effects of Carbon Content on Mechanical Properties of Inconel 718 Alloy
1. Central Iron and Steel Research Institute, Beijing 100081, China 2. Materials Research Center, Dong Fang Steam Turbine Works, Deyang 618000, Sichuan, China 3. No.704 Institute of China Shipbuilding Industry Corporation, Shanghai 200031, China
ժҪ For improving the service performance of Inconel 718 alloy, especially used as a corrosion-resistant alloy for special environment, the microstructure and mechanical property of different carbon-containing Inconel 718 alloys were investigated by the Thermo-Calc software and experiments. The experimental results indicated that the morphology, distribution and types of carbides mainly existing in the form of MC were hardly influenced by solution treatment at 1050 �� for 1 h. The precipitation amount and particle size of carbides decreased with the decrease of carbon content, which was the main reason resulting in the increase of ductility and toughness. In addition, moving dislocation could be restrained by the precipitation of carbides. Therefore, the strength could benefit from the precipitation strengthening of carbides when the precipitation of �á�/�á� phase was not influenced by the precipitation of carbides.
Abstract��For improving the service performance of Inconel 718 alloy, especially used as a corrosion-resistant alloy for special environment, the microstructure and mechanical property of different carbon-containing Inconel 718 alloys were investigated by the Thermo-Calc software and experiments. The experimental results indicated that the morphology, distribution and types of carbides mainly existing in the form of MC were hardly influenced by solution treatment at 1050 �� for 1 h. The precipitation amount and particle size of carbides decreased with the decrease of carbon content, which was the main reason resulting in the increase of ductility and toughness. In addition, moving dislocation could be restrained by the precipitation of carbides. Therefore, the strength could benefit from the precipitation strengthening of carbides when the precipitation of �á�/�á� phase was not influenced by the precipitation of carbides.
Wen-jie ZHENG,Xian-ping WEI,Zhi-gang SONG,Qi-long YONG,Han FENG,Qing-cheng XIE. Effects of Carbon Content on Mechanical Properties of Inconel 718 Alloy[J]. �й������ڿ���, 2015, 22(1): 78-83.
Wen-jie ZHENG,Xian-ping WEI,Zhi-gang SONG,Qi-long YONG,Han FENG,Qing-cheng XIE. Effects of Carbon Content on Mechanical Properties of Inconel 718 Alloy. Chinese Journal of Iron and Steel, 2015, 22(1): 78-83.
2015, Vol. 22 
