为了提高Zr-Fe-Cr高温锆合金的耐腐蚀性能,采用磁控溅射,在Zr-Fe-Cr合金表面沉积TiAlN和TiAlSiN膜,然后对有无薄膜层的样品进行高温氧化,并对比不同表面状态样品氧化层的厚度及其增重。结果表明在Zr-Fe-Cr合金表面磁控溅射TiAlN和TiAlSi...为了提高Zr-Fe-Cr高温锆合金的耐腐蚀性能,采用磁控溅射,在Zr-Fe-Cr合金表面沉积TiAlN和TiAlSiN膜,然后对有无薄膜层的样品进行高温氧化,并对比不同表面状态样品氧化层的厚度及其增重。结果表明在Zr-Fe-Cr合金表面磁控溅射TiAlN和TiAlSiN均能明显提高基材的耐高温氧化性,其中TiAlSiN层表现出更优越的的性能。分析认为,基材的高温耐腐蚀性得到改善是因为镀层在高温下形成致密的Al 2 O 3和TiO 2膜,有效保护基体不被氧化。展开更多
In the present work,the sheets of Zr-1Sn-0.3Nb-0.3Fe-0.1Cr alloy were hot rolled with different reductions(10%,30%,50%,and 60%) at 1023 K and 1073 K.The micro structure evolutions including grain micro structure,textu...In the present work,the sheets of Zr-1Sn-0.3Nb-0.3Fe-0.1Cr alloy were hot rolled with different reductions(10%,30%,50%,and 60%) at 1023 K and 1073 K.The micro structure evolutions including grain micro structure,texture,and dislocation were investigated,using electron backscattering diffraction and transmission electron microscope.The results showed that dislocation slip,twinning,and dynamic recrystallization(DRX) were the main deformation mechanisms.DRX was found to be promoted by larger reduction and higher rolling temperature.The predominant texture formed during hot rolling was basal <0001>//ND,whose intensity reached peak value after 30% reduction hot rolling.While the intensity of DRX texture <10-10>//ND and<1-210>//ND increased with increasing reduction and temperature.This study provided an effective way to tailor the texture and microstructure of the alloy,for optimizing process parameters.展开更多
文摘为了提高Zr-Fe-Cr高温锆合金的耐腐蚀性能,采用磁控溅射,在Zr-Fe-Cr合金表面沉积TiAlN和TiAlSiN膜,然后对有无薄膜层的样品进行高温氧化,并对比不同表面状态样品氧化层的厚度及其增重。结果表明在Zr-Fe-Cr合金表面磁控溅射TiAlN和TiAlSiN均能明显提高基材的耐高温氧化性,其中TiAlSiN层表现出更优越的的性能。分析认为,基材的高温耐腐蚀性得到改善是因为镀层在高温下形成致密的Al 2 O 3和TiO 2膜,有效保护基体不被氧化。
基金financially supported by the National Natural Science Foundation of China (No. U1867201).
文摘In the present work,the sheets of Zr-1Sn-0.3Nb-0.3Fe-0.1Cr alloy were hot rolled with different reductions(10%,30%,50%,and 60%) at 1023 K and 1073 K.The micro structure evolutions including grain micro structure,texture,and dislocation were investigated,using electron backscattering diffraction and transmission electron microscope.The results showed that dislocation slip,twinning,and dynamic recrystallization(DRX) were the main deformation mechanisms.DRX was found to be promoted by larger reduction and higher rolling temperature.The predominant texture formed during hot rolling was basal <0001>//ND,whose intensity reached peak value after 30% reduction hot rolling.While the intensity of DRX texture <10-10>//ND and<1-210>//ND increased with increasing reduction and temperature.This study provided an effective way to tailor the texture and microstructure of the alloy,for optimizing process parameters.
