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INFLUENCE OF GRAIN SHAPE AND CARBIDE ON CREEP CRACK GROWTH IN HK40 |
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| Authors: | ZHU Shijie Institute of Metal Research Academia Sinica Shenyang China ZHAO Jie Fushun Institute of Petrochemistry Fushun China WANG Fugang Dalian University of Technology Dalian China Institute of Metal Research Academia Sinica Shenyang |
| Abstract: | The influence of two different grain shapes and carbides in the HK40 alloy,the material for use of furnace tube,on the rate of creep crack growth has been investigated.The resistance to creep crack growth of the material with columnar grains is inferior than that with equiaxial grains when the load line is perpendicular to the columnar grain axis.The influence of secon- dary carbide on the rate of creep crack propagation depends upon the Brain shape. |
| Keywords: | grain shape creep rate crack propagation |
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