Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Jinshan He"'
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 3608-3619 (2024)
The study investigated the creep-fatigue interaction behavior, fracture mechanism, and microstructure evolution of C630R ferritic/martensitic heat-resistant steel at 630 °C and 1% strain amplitude. The results indicate that C630R ferritic/martensiti
Externí odkaz:
https://doaj.org/article/9478448ddb2e43a896adf0311277704a
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 152-164 (2024)
The evolution of tensile properties and microstructure in three 9% Cr martensitic rotor steel with varying contents of W and Mo elements is investigated after aging at 630 °C for different durations, with a primary focus on the characteristics of ma
Externí odkaz:
https://doaj.org/article/7cd6125eaafb49d1ae0586f1c1ddacbd
Publikováno v:
Journal of Materials Research and Technology, Vol 29, Iss , Pp 3089-3095 (2024)
In this paper, the differences of the impact toughness and microstructure of specimens with (IA specimen) and without intercritical annealing (OIA specimen) after welding thermal simulation were compared to illustrate the effect of intercritical anne
Externí odkaz:
https://doaj.org/article/2b076a228c2d4daeac0f7cb78515df5a
Publikováno v:
Journal of Materials Research and Technology, Vol 27, Iss , Pp 7871-7881 (2023)
Strain-induced precipitation (SIP) behaviors of 7Mo super-austenitic stainless steel (SASS) were studied by strain relaxation test at 850 °C. Our results reveal that sigma (σ) phases are the predominant SIP of 7Mo SASS, with the chemical formula of
Externí odkaz:
https://doaj.org/article/9a1da8fe0f5b4cda92d058d5fd31d083
Publikováno v:
Journal of Materials Research and Technology, Vol 26, Iss , Pp 999-1005 (2023)
Topologically close-packed phases (TCP phase), with ordered dense-stacked structure, realize the atomic diffusion at high temperatures by forming the defects. In this study, we investigated the σ → γ transformation process at high temperature in
Externí odkaz:
https://doaj.org/article/91165dfbf62c43e7814d47ebae861101
Publikováno v:
Journal of Materials Research and Technology, Vol 25, Iss , Pp 4479-4487 (2023)
The microstructures stability of directional-solidified (DS) MarM247LC alloy were investigated during thermal exposure at 800–950 °C up to 5000 h. In the dendrite core (DC), the particle size distribution (PSD) of γ′ phase shows that the coarse
Externí odkaz:
https://doaj.org/article/57b6824b5db548d19e31b3fba15ac48f
Publikováno v:
Materials & Design, Vol 236, Iss , Pp 112450- (2023)
The simultaneous provision of strength and ductility of casting superalloy is challenging. In this work, a micro-grain casting process was applied to produce grain-refined K4169 alloy, which exhibited a superior combination of tensile ultimate streng
Externí odkaz:
https://doaj.org/article/764b139c8d9243bb8b5c36122f0c3c75
Publikováno v:
Journal of Materials Research and Technology, Vol 23, Iss , Pp 1738-1752 (2023)
Hot deformation behaviors and dynamic softening mechanisms of the 7Mo super-austenitic stainless steel (SASS) were studied in the temperature range of 1000–1200 °C and stain rate of 0.001–10 s−1. It is found the optimum windows of hot deformat
Externí odkaz:
https://doaj.org/article/f948151dd11d4d0a83cdc522b7536600
Publikováno v:
Journal of Materials Research and Technology, Vol 22, Iss , Pp 1238-1249 (2023)
Effect of Ce and Mn on solidification behaviors and mechanical properties of 7Mo super austenitic stainless steel was investigated via in-situ observations, thermodynamic calculations and microstructural characterization. The results show that the ne
Externí odkaz:
https://doaj.org/article/d75aa0b737db41e8a6049466e418ef4e
Publikováno v:
Journal of Materials Research and Technology, Vol 21, Iss , Pp 1248-1255 (2022)
In-situ observation and microstructure analysis were combined with the nanoindentation to study the effect of the orientation relationship between the σ and γ phases on the mechanical property of the 7Mo super austenite stainless steel. The results
Externí odkaz:
https://doaj.org/article/558f304502154a5e9dfb86139e0eebb1