Effect of �� Phase on Mechanical Properties of GH4169 Alloy at Room Temperature
Neng-yong YE1,, Ming CHENG1,,?Shi-hong ZHANG2,?Hong-wu SONG2,?Hong-wei ZHOU1, Ping-bo WANG1
1. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals,Lanzhou University of Technology,Lanzhou 730050,Gansu,China ?2. Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,Liaoning,China
Effect of �� Phase on Mechanical Properties of GH4169 Alloy at Room Temperature
Neng-yong YE1,, Ming CHENG1,,?Shi-hong ZHANG2,?Hong-wu SONG2,?Hong-wei ZHOU1, Ping-bo WANG1
1. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals,Lanzhou University of Technology,Lanzhou 730050,Gansu,China ?2. Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,Liaoning,China
ժҪ Tensile tests of GH4169 alloy were performed at room temperature. Different fractions,distributions and shapes of �� phase were prepared by aging treated at 880 ��C,930 ��C and 980 ��C for 5 h or 10 h. The effects of �� phase on the mechanical pro-perties of GH4169 alloy were investigated. The results show that 0.2% yield strength and ultimate tensile strength of GH4169 alloy increase by 61 MPa and 78 MPa respectively when the fraction of �� phase increases from 2.20% to 5.21%. Then,the ultimate ten-sile strength remains at 1 012 MPa even when the fraction of �� phase reaches 7.56%. The fraction effect of �� phase on the strength improvement of GH4169 alloy is more significant than morphology,and the critical fraction value is 5.21%. In addition,the elon-gation decreases by 14.1% when the fraction of �� phase increases from 2.20% to 7.56%. Excessive needle or short rod shaped �� phase is responsible for the reduction of elongation.
Abstract��Tensile tests of GH4169 alloy were performed at room temperature. Different fractions,distributions and shapes of �� phase were prepared by aging treated at 880 ��C,930 ��C and 980 ��C for 5 h or 10 h. The effects of �� phase on the mechanical pro-perties of GH4169 alloy were investigated. The results show that 0.2% yield strength and ultimate tensile strength of GH4169 alloy increase by 61 MPa and 78 MPa respectively when the fraction of �� phase increases from 2.20% to 5.21%. Then,the ultimate ten-sile strength remains at 1 012 MPa even when the fraction of �� phase reaches 7.56%. The fraction effect of �� phase on the strength improvement of GH4169 alloy is more significant than morphology,and the critical fraction value is 5.21%. In addition,the elon-gation decreases by 14.1% when the fraction of �� phase increases from 2.20% to 7.56%. Excessive needle or short rod shaped �� phase is responsible for the reduction of elongation.
��������:Opening fund of the State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology
ͨѶ����:
Nengyong Ye
E-mail: yny1030@163.com
����:
Neng-yong YE,, Ming CHENG,,?Shi-hong ZHANG,?Hong-wu SONG,?Hong-wei ZHOU, Ping-bo WANG. Effect of �� Phase on Mechanical Properties of GH4169 Alloy at Room Temperature[J]. �й������ڿ���, 2015, 22(8): 752-756.
Neng-yong YE,, Ming CHENG,,?Shi-hong ZHANG,?Hong-wu SONG,?Hong-wei ZHOU, Ping-bo WANG. Effect of �� Phase on Mechanical Properties of GH4169 Alloy at Room Temperature. Chinese Journal of Iron and Steel, 2015, 22(8): 752-756.
2015, Vol. 22 
