TY - GEN
T1 - Property responses in Nb-Si-Hf-Ti-Al-W-B-Cr alloys for high-temperature applications
AU - Yang, Xiuxia
AU - Sha, Jiangbo
AU - Zhang, Hu
PY - 2010
Y1 - 2010
N2 - Multi-component Nb-(11,15)Si-5Hf-30Ti-4Al-4W-2B-(8,16)Cr alloys have been proposed, attempting to obtain the Nb-Si based alloys with a comprehensive property. The results show that three phases of NbSS, Nb5Si 3 and Laves Cr2Nb exist in the alloys with a Cr content of 16 at%. With increasing Si and Cr contents the fracture toughness KQ decreases, while the oxidation resistance at 1250°C and strength at 1250°C and 1350°C exhibit an increasing tendency. The 15Si-16Cr alloy shows the highest strength and oxidation resistance, and the lowest toughness; they are 385MPa at 1350°C, 215mg/cm2 at 1250°C for 100 h, and 5.45 MPa·m1/2 at room temperature, respectively. The 11Si-8Cr alloy with an NbSS/Nb5Si3 microstructure only has the highest toughness of 11.87 MPa·m1/2, its strength and oxidation resistance are the lowest.
AB - Multi-component Nb-(11,15)Si-5Hf-30Ti-4Al-4W-2B-(8,16)Cr alloys have been proposed, attempting to obtain the Nb-Si based alloys with a comprehensive property. The results show that three phases of NbSS, Nb5Si 3 and Laves Cr2Nb exist in the alloys with a Cr content of 16 at%. With increasing Si and Cr contents the fracture toughness KQ decreases, while the oxidation resistance at 1250°C and strength at 1250°C and 1350°C exhibit an increasing tendency. The 15Si-16Cr alloy shows the highest strength and oxidation resistance, and the lowest toughness; they are 385MPa at 1350°C, 215mg/cm2 at 1250°C for 100 h, and 5.45 MPa·m1/2 at room temperature, respectively. The 11Si-8Cr alloy with an NbSS/Nb5Si3 microstructure only has the highest toughness of 11.87 MPa·m1/2, its strength and oxidation resistance are the lowest.
KW - Fracture toughness
KW - High-temperature strength
KW - Lavers CrNb
KW - Nb-Si alloys
KW - Oxidation resistance
UR - https://www.scopus.com/pages/publications/77955478181
U2 - 10.4028/www.scientific.net/MSF.654-656.468
DO - 10.4028/www.scientific.net/MSF.654-656.468
M3 - 会议稿件
AN - SCOPUS:77955478181
SN - 0878492550
SN - 9780878492558
T3 - Materials Science Forum
SP - 468
EP - 471
BT - PRICM7
PB - Trans Tech Publications Ltd
T2 - 7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
Y2 - 2 August 2010 through 6 August 2010
ER -