Results 41 to 50 of about 25,614 (293)

Precipitation strengthening mechanisms in Cu/Ni alloyed steel

Cailiao gongcheng
The microstructural evolution and yield strength changes of medium-Mn steels with Cu， Ni， and Cu/Ni composite additions after aging at 500 ℃ are systematically compared using electron backscatter diffraction （EBSD）， transmission electron microscopy （TEM）
LAI Weiqiang, DING Fanglin, HU Bin, LUO Haiwen   +3 more
doaj   +1 more source

A great enhancement of both strength and plasticity in a dual-phase high-entropy alloy by multi-effects of high carbon addition

Materials & Design, 2023
High-entropy alloys (HEAs) have become an interesting research area for the novel alloying design paradigm. Interstitial carbon has usually been introduced to enhance mechanical properties of HEAs. To achieve addition of high carbon, this work designed a
Conghui Hu, Jianlei Zhang, Yunhu Zhang, Changjiang Song, Qijie Zhai   +4 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Ductilizing brittle high-entropy alloys via tailoring valence electron concentrations of precipitates by controlled elemental partitioning

Materials Research Letters, 2018
High-strength high-entropy alloys (HEAs) reinforced by hard intermetallics generally show a propensity for embrittlement, significantly undercutting their applications.
T. Yang, Y. L. Zhao, W. H. Liu, J. H. Zhu, J. J. Kai, C. T. Liu   +5 more
doaj   +1 more source

Unveiling the Affect of Annealing Temperature on the Phase Transformations of Inconel 718 Superalloy Manufactured by Additive Manufacturing [PDF]

Iranian Journal of Materials Science and Engineering, 2023
Phase transformations and the evolution of hardness during elevated-temperature annealing of Inconel 718 superalloy manufactured by the laser powder bed fusion (L-PBF) were investigated. The microstructural evolution, elemental analysis, phase formation,
Sajad Ghaemifar, Hamed Mirzadeh
doaj  

Prediction of precipitation kinetics and strengthening in FeMnAlC lightweight steels

Journal of Materials Research and Technology, 2021
Fe–Al–Mn–C steels have superior mechanical properties, such as high yield and tensile strengths and low density, which make them suitable for applications in the automotive and defense industries.
Jaeeun Lee, Hwangsun Kim, Kyeongjae Jeong, Seong-Jun Park, Joonoh Moon, Sung-gyu Kang, Heung Nam Han   +6 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Precipitation Strengthening in Al-Mg-Si Alloys

, 2021
Precipitation strengthening is one of the key strengthening strategies in many industrial alloys like aluminum alloys, nickel-based superalloys, etc.
Hu, Yi
core   +1 more source

Effects of NiAl on precipitation behavior and mechanical properties of M2C strengthened secondary hardening steel

Journal of Materials Research and Technology
A novel dual-precipitation steel was developed by introducing NiAl into secondary hardening ultrahigh strength steel. This steel exhibited a yield strength of 1.9 GPa, an ultimate tensile strength of 2.3 GPa, and an elongation of 9%.
Yangxin Wang, Aijun Li, Tong wang, Junjie Sheng, Xin Cao, Chundong Hu, Han Dong   +6 more
doaj   +1 more source

Strengthening Mechanisms in CoCrFeNiX_0.4 (Al, Nb, Ta) High Entropy Alloys Fabricated by Powder Plasma Arc Additive Manufacturing

Nanomaterials, 2021
In high entropy alloys (HEAs), the addition of large-size atoms results in lattice distortion and further leads to solid solution strengthening or precipitation strengthening.
Yupeng Zhang, Qingkai Shen, Xizhang Chen, Subramanian Jayalakshmi, Ramachandra Arvind Singh, Sergey Konovalov, Vladislav B. Deev, Evgeny S. Prusov   +7 more
doaj   +1 more source