Zobrazeno 1 - 10
of 3 548
pro vyhledávání: '"SINGLE-CRYSTAL SUPERALLOY"'
Publikováno v:
Materials Research Letters, Pp 1-9 (2024)
The interaction effects of γ-strengthening and γ'-former elements have long troubled the alloying design of superalloys, especially improving γ'-thermostability by Al addition against higher temperatures. Here we establish a thermodynamics-based p
Externí odkaz:
https://doaj.org/article/4ddd4b9f44164cf5b7e8306fbfacd416
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 2538-2548 (2024)
This paper proposes a novel vibration fatigue testing methodology of thin-walled specimens in the very high cycle fatigue (VHCF) regime, with the lifetime up to 109 cycles. A series of novel thin-walled specimens for the single crystal superalloy DD6
Externí odkaz:
https://doaj.org/article/7b4329b12eab4fb0b6bc93a7dc7feacf
Publikováno v:
Cailiao gongcheng, Vol 52, Iss 9, Pp 94-103 (2024)
Currently， the surface working temperature of second-generation or more advanced single crystal superalloy blade is above 1050 ℃， resulting in serious interdiffusion between coating and substrate. The interdiffusion not only consumes the benefi
Externí odkaz:
https://doaj.org/article/89dd88dbc2064a9489846c46060593ce
Autor:
Jingjing Wu, Chaowei Zhang, Liang Wang, Yanhong Yang, Lina Yao, Xinguang Wang, Jie Meng, Yizhou Zhou, Xiaofeng Sun
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 59-66 (2024)
The solution-treated second-generation single crystal (SX) superalloys underwent hot isostatic pressing (HIP) at 1316 °C and 105 MPa for varying durations. This study investigates the effect of HIP on micropores and stress-rupture behavior under con
Externí odkaz:
https://doaj.org/article/6413dd834209450b9efedf448422ef31
Publikováno v:
Chinese Journal of Mechanical Engineering, Vol 37, Iss 1, Pp 1-13 (2024)
Abstract The effect of yttrium (Y) addition on the oxidation behavior of a Ni-based directionally solidified single-crystal superalloy is investigated in this study. Isothermal oxidation tests for samples with different levels of Y addition are condu
Externí odkaz:
https://doaj.org/article/a1b62dee8bc14048845ed5d1ad892903
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 3708-3716 (2024)
The fatigue crack initiation process accounts for the main portion of the high-cycle fatigue (HCF) life. Although coated superalloys are well-known to be prone to surface microcracks, the influence of the coating-substrate microstructure on the damag
Externí odkaz:
https://doaj.org/article/12c9003b7c724dffb61f801fbcc689dd
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 2386-2394 (2024)
Turbine blades are mainly subjected to thermal stress and gradient centrifugal stress in operational conditions. The effects of centrifugal stress on the microstructural degradation of single crystal superalloys under a multiaxial stress state remain
Externí odkaz:
https://doaj.org/article/90b097f0c8414ce3ba67ad0b43211465
Publikováno v:
Materials Research Letters, Vol 12, Iss 9, Pp 626-634 (2024)
The creep mechanism of a Co-based single-crystal (SX) superalloy at 760°C/800 MPa (∼90% yield strength) was revealed and differed from those of Re-containing Ni-based SX superalloys. Experimental alloy displays superior creep resistance in the ear
Externí odkaz:
https://doaj.org/article/8654dfee6a3a40e29511a72f677f2137
Autor:
Yiran Cui, Ming Sun, Li Wang, Hao Fan, Junbo Zhao, Haibo Long, Shengcheng Mao, Ze Zhang, Xiaodong Han
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 3213-3219 (2024)
This work investigates the effect of Ru on the precipitation of the topologically close-packed (TCP) phase from the γ-γʹ microstructural degradation analysis. The addition of Ru is found to delay the precipitation time of the TCP phase from 100 h
Externí odkaz:
https://doaj.org/article/c5b03211b31e40d1bf92619629fa4677
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 5523-5528 (2024)
Fast homogenization without incipient melting is the key to designing solution heat treatment (SHT) process for single crystal superalloys. In this paper, a multicomponent phase-field model coupled with solidus temperature is developed for dynamicall
Externí odkaz:
https://doaj.org/article/93ed6c638a724d7393b4c6ec79afd0ad