Effect of microstructural degradation on the overtemperature rupture performance in Ru-containing Ni-based single crystal superalloys

Zhao, Junbo1; Zhao, Yunsong1,2; Fan, Hao1; Cao, Liwei1; Sun, Ming1; Yang, Guo1; Long, Haibo1; Mao, Shengcheng1; Han, Xiaodong1,3

2024-06-01

10.1016/j.jmrt.2024.06.004

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T   影响因子和分区

2238-7854

2214-0697

This work investigates the effect of microstructural degradation on the overtemperature rupture performance in Ru-containing Ni-based single crystal superalloys. Unlike the initial samples, the rupture lives in the degraded sample are largely lost, and adding Ru in the degraded sample increases the rupture life at 1120 degrees C/100 MPa and 1180 degrees C/100 MPa. Based on the difference in the microstructure and microstructural evolution in the initial and degraded samples. Their influence on the rupture performance can be derived. The enlarged width of the gamma matrix is the major reason for the reduction of the rupture life and increase in the strain for the degraded sample compared to the initial samples. The existence of the dislocation network and the inhibition of the precipitation of the TCP phase are the major reasons for the lower rupture life reduction in the 5Ru degraded sample than in the 3Ru degraded sample. The mobility of the dislocation increases with the temperature, weakening the benefit effect caused by Ru.

Ni-based superalloys Microstructure degradation Ru element Overtemperature rupture performance

SCI ; EI

英语

其他

National Key Research and Development Program of China, China[2021YFA1200201] ; Natural Science Foundation of China, China["51988101","91860202","52171001","52071003"] ; General Program of Science and Technology Development Project of Beijing Municipal Education Commission, China[KM202210005003] ; Beijing Outstanding Young Scientists Projects, China[BJJWZYJH01201910005018] ; Beijing Nova Program, China[Z211100002121170] ; The "111" project, China[DB18015]

Materials Science ; Metallurgy & Metallurgical Engineering

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:001251473800001

ELSEVIER

Web of Science

1.Beijing Univ Technol, Coll Mat Sci & Engn, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100124, Peoples R China
2.Beijing Inst Aeronaut Mat, Sci & Technol Adv High Temp Struct Mat Lab, Beijing 100124, Peoples R China
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518000, Peoples R China

Zhao, Junbo,Zhao, Yunsong,Fan, Hao,et al. Effect of microstructural degradation on the overtemperature rupture performance in Ru-containing Ni-based single crystal superalloys[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,30.

Zhao, Junbo.,Zhao, Yunsong.,Fan, Hao.,Cao, Liwei.,Sun, Ming.,...&Han, Xiaodong.(2024).Effect of microstructural degradation on the overtemperature rupture performance in Ru-containing Ni-based single crystal superalloys.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,30.

Zhao, Junbo,et al."Effect of microstructural degradation on the overtemperature rupture performance in Ru-containing Ni-based single crystal superalloys".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 30(2024).