Zobrazeno 1 - 10
of 1 741
pro vyhledávání: '"Medium entropy alloy"'
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 7136-7146 (2024)
In recent decades, thanks to the advancements within materials science and engineering, a novel class of metallic compounds, named high and medium-entropy alloys, has begun to capture the attention of researchers worldwide. Despite their excellent me
Externí odkaz:
https://doaj.org/article/738fc9e64d6d47a292a088ca49df5d86
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 5193-5203 (2024)
In this study, a series of Ti50–ZrVNbCr alloys were designed under with the constant atomic radius mismatch. It was suggested that valence electron concentration (VEC) and lattice constant, which evolve oppositely in the series of the Ti50–ZrVNbC
Externí odkaz:
https://doaj.org/article/222dbdeb62db42229e061d921e3f178f
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 1087-1096 (2024)
In this study, the effect of post heat treatment on microstructural evolution and tensile properties of 0.75% of carbon doped NiCoCr MEA alloy manufactured by laser powder bed fusion (LPBF) was investigated. The post heat treatment of LPBF-built 0.75
Externí odkaz:
https://doaj.org/article/361d50a533654123a0e1b3df301e89d0
Autor:
Shiyu Du, Tuanwei Zhang, Jinyao Ma, Zhiming Jiao, Jianjun Wang, Shengguo Ma, Renlong Xiong, Zhihua Wang
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 2856-2867 (2024)
A novel precipitate-strengthened Co–Cr–Ni medium-entropy alloy with a pure “FCC + L12” dual-phase structure is developed by adding a high concentration (6 at.%) of Al and Ti elements. After aging heat treatment at 700 °C for 4 h, the hierarc
Externí odkaz:
https://doaj.org/article/0bbf1afcdc1b4f2ca5e9a5c369555d80
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 471-479 (2024)
An ultra-high strain rate (104 s−1) dynamic plastic deformation treatment at liquid nitrogen temperature (LNT-DPD) followed by annealing is carried out to obtain dual heterogeneity of grain size and dislocation density in an equiatomic CrCoNi mediu
Externí odkaz:
https://doaj.org/article/70cc5d74676b4e61bc0b68bef632e140
Publikováno v:
Cailiao Baohu, Vol 57, Iss 9, Pp 36-44 (2024)
In order to study the corrosion resistance of low-temperature rolled and annealed CrCoNi medium entropy alloy in NaCl solution， the CrCoNi medium entropy alloy deformed by low-temperature (-196 ℃) rolling was annealed at 800 ℃for 30 min.The cor
Externí odkaz:
https://doaj.org/article/5b120b039ec84e85a9b3428afdee6bc2
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 2963-2971 (2024)
Heterogeneous grain structures with coherent L12 nanoprecipitates were constructed in a medium entropy alloy with chemical composition of Co34.5Cr32Ni27.5Al3Ti3 (at. %). The volume fraction and size of L12 nanoprecipitates are observed to become high
Externí odkaz:
https://doaj.org/article/e55fd37ff77444199c777b6eb68808c4
Autor:
Kai Wang, Guanyu Huang, Xuetao Zou, Lanxi Feng, Zhuocheng Xie, Longhui Zhang, Shuang Qin, Xiaohu Yao
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 2345-2356 (2024)
Grain boundary (GB) strengthening of metallic materials faces limitations as grain sizes are reduced to the nanoscale, primarily due to the transition from the strengthening to the softening effects. Understanding the intrinsic mechanisms behind such
Externí odkaz:
https://doaj.org/article/8fa400a7b861484c9e7a38d25a964f6a
Autor:
Young Mok Kim, Tae Jin Jang, Donghyeon Chae, Boryung Yoo, Sang-Ho Oh, Hyungjo Seo, Seungjin Nam, Dogyun Byeon, Joungwook Kim, Byeong-Joo Lee, Pyuck-Pa Choi, Alireza Zargaran, Seok Su Sohn
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 1589-1601 (2024)
In response to the persistent challenge of optimizing the tribological performance of engineered coatings without compromising material hardness, this study investigates the potential of medium-entropy CrCoNiCu alloy films. Fabricated via sputtering
Externí odkaz:
https://doaj.org/article/39143fe2b027409c94f6569ea1a706fa
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 491-501 (2024)
In this study, the processing parameters of a laser powder bed fusion (LPBF)-fabricated CoCrNi alloy were systematically investigated for their impact on mechanical properties, microstructure, and fracture characteristics when the relative density ex
Externí odkaz:
https://doaj.org/article/67423c22f8074a4faee71e914a988d34