Vickers hardness test of nickel-based single crystal superalloy
The effects of testing forces,indentation diagonal direction,and indentation location on the measurement results of Vickers hardness for nickel-based single crystal superalloy were investigated.The results indicated that the testing force and the indentation location(either at dendrite arm or in interdendritic region)had little influence on the Vickers hardness measurement results,while the indentation diagonal direction had a certain impact.On the {100} crystal plane,the hard-ness value was the highest when the indentation diagonal direction lied along the<001>crystal orientation,and the lowest along the<011>crystal orientation.The difference was about 35HV.On the { 111 } crystal plane,the hardness value was between the above maximum and minimum values.The nickel-based single crystal superalloy exhibited anisotropy so that there were significant differences in the elastic modulus and other factors on different crystal orientations,which affect-ed the measurement results of Vickers hardness.
Vickers hardnessnickel-based single crystal superalloyanisotropyYoung's modulus
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万方数据
