Dong Xingsheng, Si Naichao, Si Songhai, Zhang Zhijian, Liu Rong. Effect of Ti on the Microstructure and Thermal Fatigue Property of ZA27 Alloy[J]. IRON STEEL VANADIUM TITANIUM, 2012, 33(6): 16-21.
Citation:
Dong Xingsheng, Si Naichao, Si Songhai, Zhang Zhijian, Liu Rong. Effect of Ti on the Microstructure and Thermal Fatigue Property of ZA27 Alloy[J]. IRON STEEL VANADIUM TITANIUM, 2012, 33(6): 16-21.
Dong Xingsheng, Si Naichao, Si Songhai, Zhang Zhijian, Liu Rong. Effect of Ti on the Microstructure and Thermal Fatigue Property of ZA27 Alloy[J]. IRON STEEL VANADIUM TITANIUM, 2012, 33(6): 16-21.
Citation:
Dong Xingsheng, Si Naichao, Si Songhai, Zhang Zhijian, Liu Rong. Effect of Ti on the Microstructure and Thermal Fatigue Property of ZA27 Alloy[J]. IRON STEEL VANADIUM TITANIUM, 2012, 33(6): 16-21.
The effect of Ti modification on microstructure and thermal fatigue property of ZA27 alloy is discussed in this paper.The samples’ microstructure and morphologies of cracks caused by thermal fatigue are examined by optica1 microscopy（OM） and scanning electron microscopy（SEM）,and mechanism of Ti modification and thermal fatigue damage are analyzed.The results show that after Ti modification,the grains are obviously refined and primary α-A1 phases are found to vary from thick dendrite to fine petal-shaped dendrite.The plasticity and toughness of ZA27 are significantly increased,which results in the improvement of the thermal fatigue property.With a Ti addition at 0.3%,ZA27 exhibits the best thermal fatigue property.
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