Zobrazeno 1 - 10
of 47
pro vyhledávání: '"ZHANG Mai-cang"'
Publikováno v:
工程科学学报, Vol 41, Iss 7, Pp 889-897 (2019)
Niobium is a strong carbonitride-forming element. The evolution of Nb-rich carbonitride in austenitic steels during welding has an important effect on the ductility of the heat-affected zone (HAZ). The new austenitic heat-resistant steel of 22Cr15Ni3
Externí odkaz:
https://doaj.org/article/95924b47a2594ce2892acfd10a6ad86a
Publikováno v:
工程科学学报, Vol 41, Iss 6, Pp 772-780 (2019)
In the previous studies on the microstructure and orientation of titanium alloys, the microstructural and orientational evolution of typical titanium alloys during thermal compression have been studied in depth. However, studies of the correlation be
Externí odkaz:
https://doaj.org/article/285d971ca51c4c18b03e44976e3f08e6
Publikováno v:
工程科学学报, Vol 41, Iss 4, Pp 479-488 (2019)
Nickel-base superalloy 617B is one of the most promising candidates for superheater and reheater pipes of advanced ultra-supercritical (AUSC) power plants.Hot extrusion is a key process during the manufacturing of superalloy 617B pipes.However, the h
Externí odkaz:
https://doaj.org/article/d7844de70bd3409a89a0242b36d38f14
Publikováno v:
工程科学学报, Vol 40, Iss 11, Pp 1332-1341 (2018)
The solidification behavior and microstructures evolution of cast Ni-based superalloy K424 under different cooling rates were investigated by isothermal solidification quenching experiments and differential scanning calorimetry (DSC). The microstruct
Externí odkaz:
https://doaj.org/article/e76963746de3477883d24fbf486ce09a
Publikováno v:
工程科学学报, Vol 39, Iss 12, Pp 1844-1850 (2017)
The effects of cyclic heat treatment and hot deformation on the spheroidization and orientation of the TC17 titanium alloy were investigated using a light microscope (LM) and electron backscattered diffraction (EBSD). The experimental results indicat
Externí odkaz:
https://doaj.org/article/34706082df1a443b8420bce150cb308c
Publikováno v:
工程科学学报, Vol 38, Iss 10, Pp 1429-1437 (2016)
Hot tearing tends to occur when K424 superalloy is used for a turbocharger turbine wheel. To solve this problem,the alloy characteristics of K424 and K418 superalloys and the factors impacting the susceptibility to hot tearing were studied by microst
Externí odkaz:
https://doaj.org/article/3d0596ec45944b7cbcc90674d58b25c0
Publikováno v:
工程科学学报, Vol 38, Iss 9, Pp 1278-1287 (2016)
To study the microstructural stability of GH4169C alloy with high content of phosphorus and niobium, the microstruc-ture and hardness of GH4169C alloy and GH4169 alloy after long time aging were comparatively analyzed in this paper. These two su-pera
Externí odkaz:
https://doaj.org/article/7eb8d12052d1470599b03e78248bc32d
Publikováno v:
工程科学学报, Vol 38, Iss 5, Pp 699-705 (2016)
The relationship of creep rupture life and microstructural evolution under different high temperature oxidation conditions for Cr35Ni45 Nb alloy was studied by using SEM and quantitative electronic probe analysis. It was found that the microstructure
Externí odkaz:
https://doaj.org/article/7fa6b4239f1d4e329102bc7da409785a
Publikováno v:
工程科学学报, Vol 38, Iss 2, Pp 248-256 (2016)
The fatigue crack growth rates of powder metallurgy (P/M) superalloy FGH97 with different grain sizes, γ' phase sizes and Hf contents were measured at a 650℃ high temperature condition and compared with those of FGH95 and FGH96 alloys. The fatigue
Externí odkaz:
https://doaj.org/article/131d455706ad479197699ec29ab701a0
Publikováno v:
工程科学学报, Vol 37, Iss 12, Pp 1610-1616 (2015)
A standard heat treatment(1105℃/4 h/(oil cooling) + 650℃/24 h/(air cooling) + 760℃/16 h/(air cooling)) and a subsequent long term exposure at temperatures of 720℃ for 0-5000 h and 800℃ for 0-1000 h were proposed to investigate the microstru
Externí odkaz:
https://doaj.org/article/d6b78c5dac7e4c59989f5e2f15a14f43