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| ELECTROCHEMICAL CORROSION AND CAVITATION EROSION BEHAVIOR OF Cr-Ni HYDRAULEC TURBINE MATERIAL |
| Yanchun Lou;Fangxin Zhao;Bo Yu;Jingcheng Wang;Yunlong Xiong |
| 沈阳铸造研究所 |
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Abstract Based on ZG06Cr13Ni4Mo (13-4)，while its chromium content being reduced to 10.61%,8.34% and 6.64% respectively,their anodic polarization curves compared with that of ZG20Cr13 have been tested in 1mol/L H2SO4 solution.Using ultrasonic vibration cavitation erosion device and Rockwell apparatus，the 13-4，the 8.5Cr-4Ni (8.5-4) and the high strength and high toughness stainless steel -SRIF have been studied on the behaviors of cavitation erosion resistance and local micro-zone elasticity respectively.Their microstructures and mechanical properties have also been investigated.The results show that electrochemical corrosion properties decrease as chromium content decreases comparing with these of the 13-4.When chromium content decreases to 8.34%,the material and ZG20Cr13 are matched in electrochemical corrosion properties,which is still in the category of stainless steel.The values of local micro-zone elasticity he of 8.5-4,13-4 and SRIF are very close.The cavitation erosion resistances of the 13-4 are higher a little than these of the 8.5-4,and these of the SRIF are obviously higher than those of 8.5-4 and 13-4.
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Received: 20 January 2005
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Corresponding Authors:
Yanchun Lou
E-mail: Yub@Chinasrif.com
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