TY - GEN
T1 - Effects of Zirconium Additions on the Microstructure and Stress-Rupture Properties in Polycrystalline Ni-Based Superalloys
AU - Zhou, Yang
AU - Cui, Yanna
AU - Wang, Bo
AU - Liang, Jiamiao
AU - Li, Shuping
AU - Wang, Jun
N1 - Publisher Copyright:
© The Minerals, Metals & Materials Society 2024.
PY - 2024
Y1 - 2024
N2 - In the present work, comprehensive investigations were conducted to examine the distribution behavior of the minor alloying elementMinor-alloying element Zr, its impact on microstructural evolutionMicrostructural evolution and effect on the high-temperatureHigh temperaturestress-rupture propertiesStress-rupture properties in IN 100 superalloysSuperalloys. The results indicate that the presence of Zr influences the eutectic phase in as-cast alloys, resulting in a reduction in the γ channel width and an increase in both the volume fraction and size of the γ′ phase. Through the time of flight-secondary ion mass spectrometry and transmission electron microscope analysis, Zr is found to segregate along the eutectic front in the form of Ni5Zr in 900 °C stress-ruptured samples, rendering IN 100 alloys enhanced creep resistanceCreep resistance at elevated temperatures. Heat treatmentHeat treatment at 1200 °C could effectively eliminate the eutectic structure, thus mitigating the segregationSegregation of Zr. A maximum endurance life in IN 100 alloys at 900 °C/314 MPa and 950 °C/225 MPa is reached when Zr content is approximately 700 ppm. Synergistic effects including the eutectic content, volume fraction, and the degree of raftingRafting of the γ′ phase together with the dislocation networkDislocation networks structure were analyzed and discussed, contributing to the improved stress-rupture propertiesStress-rupture properties in IN 100 alloys.
AB - In the present work, comprehensive investigations were conducted to examine the distribution behavior of the minor alloying elementMinor-alloying element Zr, its impact on microstructural evolutionMicrostructural evolution and effect on the high-temperatureHigh temperaturestress-rupture propertiesStress-rupture properties in IN 100 superalloysSuperalloys. The results indicate that the presence of Zr influences the eutectic phase in as-cast alloys, resulting in a reduction in the γ channel width and an increase in both the volume fraction and size of the γ′ phase. Through the time of flight-secondary ion mass spectrometry and transmission electron microscope analysis, Zr is found to segregate along the eutectic front in the form of Ni5Zr in 900 °C stress-ruptured samples, rendering IN 100 alloys enhanced creep resistanceCreep resistance at elevated temperatures. Heat treatmentHeat treatment at 1200 °C could effectively eliminate the eutectic structure, thus mitigating the segregationSegregation of Zr. A maximum endurance life in IN 100 alloys at 900 °C/314 MPa and 950 °C/225 MPa is reached when Zr content is approximately 700 ppm. Synergistic effects including the eutectic content, volume fraction, and the degree of raftingRafting of the γ′ phase together with the dislocation networkDislocation networks structure were analyzed and discussed, contributing to the improved stress-rupture propertiesStress-rupture properties in IN 100 alloys.
KW - Minor-alloying element
KW - Ni-based superalloy
KW - Segregation behavior
KW - Stress-rupture properties
KW - TOF–SIMS
UR - http://www.scopus.com/inward/record.url?scp=85202728231&partnerID=8YFLogxK
U2 - 10.1007/978-3-031-63937-1_16
DO - 10.1007/978-3-031-63937-1_16
M3 - 会议稿件
AN - SCOPUS:85202728231
SN - 9783031639364
T3 - Minerals, Metals and Materials Series
SP - 166
EP - 175
BT - Superalloys 2024 - Proceedings of the 15th International Symposium on Superalloys
A2 - Cormier, Jonathan
A2 - Edmonds, Ian
A2 - Forsik, Stephane
A2 - Kontis, Paraskevas
A2 - O’Connell, Corey
A2 - Smith, Timothy
A2 - Suzuki, Akane
A2 - Tin, Sammy
A2 - Zhang, Jian
PB - Springer Science and Business Media Deutschland GmbH
T2 - 15th International Symposium on Superalloys, ISS 2024
Y2 - 8 September 2024 through 12 September 2024
ER -