Zobrazeno 1 - 10
of 2 855
pro vyhledávání: '"Hall-Petch"'
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
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 15, Iss 1, Pp 925-940 (2024)
CoCrNi medium-entropy alloys (MEAs) have attracted extensive attention and research because of their superior mechanical properties, such as higher ductility, strength, and toughness. This study uses molecular dynamics (MD) simulations to investigate
Externí odkaz:
https://doaj.org/article/d778d4dc3dd749a0a7d76e67b2f8097f
Autor:
Jiaxiang Li, Kenta Yamanaka, Yongjie Zhang, Tadashi Furuhara, Guoqin Cao, Junhua Hu, Akihiko Chiba
Publikováno v:
Materials Research Letters, Vol 12, Iss 6, Pp 399-407 (2024)
ABSTRACTThe Hall-Petch strengthening coefficient of face-centered cubic alloys has the potential to increase. Herein, we experimentally determined an unconventionally large Hall-Petch coefficient equal to 1100 MPa·µm1/2 and a large lattice friction
Externí odkaz:
https://doaj.org/article/048e6f086ace49349c2c3143b5aeb82b
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 6829-6835 (2024)
The effect of yttrium addition on the grain refinement, formation of long period stacking ordered (LPSO) structures, and improved hardness in hot extruded Mg99.5-xNi0.5Yx (x = 0, 0.5, and 1 at%) alloys was investigated. It was revealed that with incr
Externí odkaz:
https://doaj.org/article/bff6fdc57549479a932fdd6ac6644ec7
Autor:
L.O.N.G. Shao-lei, Y.I. Yan-liang, W.U. Shan, L.U.O. Xiang-lan, Z.H.A.N.G. Hao-dong, L.I.N.G. Min, L.O.N.G. Xiao, L.I.A.N.G. Yi-long
Publikováno v:
Journal of Materials Research and Technology, Vol 29, Iss , Pp 2216-2226 (2024)
To address the challenges posed by the limitations of the Hall-Petch equation for strip martensite steel and the complex relationship between its macro-plasticity/toughness (MATP) and micro-plasticity/toughness (MITP), a composite parameter model (CP
Externí odkaz:
https://doaj.org/article/f50b2fbb82bd4376af14cfec8644f45b
Autor:
Parastoo Mahmoud Kalayeh, Amir Hossein Asadi, Hamed Mirzadeh, Mehdi Malekan, Massoud Emamy, Reza Mahmudi
Publikováno v:
Journal of Materials Research and Technology, Vol 28, Iss , Pp 744-751 (2024)
The effect of yttrium addition on the evolution of phases, grain refinement, and mechanical behavior of Mg-0.5Ni cast alloy was investigated. It was observed that while the base alloy contained a eutectic structure containing α-Mg and Mg2Ni, in the
Externí odkaz:
https://doaj.org/article/e58f8c429ded4b3f8cdcf43702721e10
Autor:
Aaditya Lakshmanan, Mohsen Taheri Andani, Mohammadreza Yaghoobi, John Allison, Amit Misra, Veera Sundararaghavan
Publikováno v:
Journal of Magnesium and Alloys, Vol 11, Iss 12, Pp 4445-4467 (2023)
This work presents a method to incorporate the micro Hall-Petch equation into the crystal plasticity finite element (CPFE) framework accounting for the microstructural features to understand the coupling between grain size, texture, and loading direc
Externí odkaz:
https://doaj.org/article/58480c55be6a4fc1a0c46e10cb185b80
Autor:
Huanhuan Chen, Zhen Zhang, Shilai Hu, Jinhua Peng, Zijian Zhou, Shiju Cao, Xiaodong Du, Haigen Wei
Publikováno v:
Journal of Materials Research and Technology, Vol 27, Iss , Pp 7656-7663 (2023)
The AZ31 magnesium alloy with different grain sizes was prepared by adjusting the heat treatment process, and then the tension and compression tests were carried out to explore the effect of grain sizes and loading conditions on the microstructures a
Externí odkaz:
https://doaj.org/article/d81b7305c86c424bbdca7c67831fe74e
Publikováno v:
Journal of Materials Research and Technology, Vol 27, Iss , Pp 7159-7166 (2023)
The Nanotwin structure exhibits great potential as a strengthening medium, with its effectiveness influenced by both internal structural size and temperature. In this work, we developed a strength model that incorporates the dependence on temperature
Externí odkaz:
https://doaj.org/article/84df789402a345d9b0412bccbb67aba6
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