Development of a high-strength Al-Zn-Mg-Cu-based alloy via multi-strengthening mechanisms

2021 ◽  
Vol 205 ◽  
pp. 114216
Author(s):  
Sung-Jae Won ◽  
Hyeongsub So ◽  
Leeseung Kang ◽  
Soong Ju Oh ◽  
Kyou-Hyun Kim
Keyword(s):  
High Strength ◽  
Strengthening Mechanisms

Multiple strengthening mechanisms in high strength ultrafine-grained Al–Mg alloys

2020 ◽  
Vol 771 ◽  
pp. 138613 ◽  
Author(s):  
Hao Wang ◽  
Hongwei Geng ◽  
Dengshan Zhou ◽  
Kodai Niitsu ◽  
Ondrej Muránsky ◽  
...  
Keyword(s):  
High Strength ◽  
Mg Alloys ◽  
Strengthening Mechanisms ◽  
Ultrafine Grained ◽  
Al Mg Alloys

Strengthening Mechanisms and Tribological Properties of Ultra-Hard AlMgB14 Based Composite Reinforced with TiB2

2020 ◽  
Vol 12 (6) ◽  
pp. 866-872
Author(s):  
Wen Liu ◽  
Chun-Yan Hao ◽  
Xu-Dong Zhao ◽  
Xiang-Jun Wang ◽  
Guo-Liang Shi
Keyword(s):  
Fracture Toughness ◽  
Friction And Wear ◽  
Room Temperature ◽  
High Strength ◽  
Strengthening Mechanisms ◽  
Interface Bonding ◽  
Dispersion Strengthening ◽  
Hard Phase ◽  
Phase Dispersion ◽  
Relative Hardness

AlMgB14–TiB2 composites with ideal structures are successfully prepared by field activated and pressure assisted synthesis. The effects of different TiB2 contents on the relative hardness and toughness of the composites were investigated. The results showed adding TiB2 could both increase the hardness of AlMgB14 and improve the fracture toughness. The TiB2 contributed more to the hardness than to the toughness. The microstructure analysis shows that the main toughening mechanisms of AlMgB14–TiB2 composites are hard phase dispersion strengthening, high-strength interface bonding and the high elastic modulus of TiB2. Therefore, reducing the particle size of TiB2 to nanoscale is an efficient way to improve the toughness and hardness. The results of friction and wear experiment at room temperature have shown that the addition of TiB2 into AlMgB14 enhances the abrasion–resistant property.

Strengthening mechanisms in a high-strength bulk nanostructured Cu–Zn–Al alloy processed via cryomilling and spark plasma sintering

2013 ◽  
Vol 61 (8) ◽  
pp. 2769-2782 ◽  
Author(s):  
Haiming Wen ◽  
Troy D. Topping ◽  
Dieter Isheim ◽  
David N. Seidman ◽  
Enrique J. Lavernia
Keyword(s):  
Spark Plasma Sintering ◽  
High Strength ◽  
Al Alloy ◽  
Strengthening Mechanisms ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Microstructure and Strengthening Mechanisms in an HSLA Steel Subjected to Tempforming

Metals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 48
Author(s):  
Anastasiia Dolzhenko ◽  
Alexander Pydrin ◽  
Sergey Gaidar ◽  
Rustam Kaibyshev ◽  
Andrey Belyakov
Keyword(s):  
Grain Size ◽  
Hsla Steel ◽  
High Strength ◽  
Carbide Precipitation ◽  
Strengthening Mechanisms ◽  
Plate Rolling ◽  
Ultrafine Grained ◽  
Quenched Steel ◽  
Low Alloyed Steel ◽  
Lamellar Type

An effect of tempforming on the microstructure, the carbide precipitation, and the strengthening mechanisms of high-strength low-alloyed steel has been analyzed. The quenched steel was subjected to 1 h tempering at a temperature of 873 K, 923 K, or 973 K followed by plate rolling at the same temperature. Tempforming resulted in the formation of an ultrafine grained lamellar-type microstructure with finely dispersed carbides of (Nb,V)C, Fe3C and Cr23C6. A decrease in tempforming temperature resulted in a reduction of the transverse grain size from 950 nm to 350 nm. Correspondingly, the size of Fe3C/Cr23C6 particles decreased from 90 nm to 40 nm while the size of (Nb,V)C particles decreased from 17 nm to 4 nm. Refining the tempformed microstructure with a decrease in thetempforming temperature provided an increase in the yield strength from 690 MPa to 1230 MPa.

Strengthening mechanisms of Nb and V microalloying high strength hot-stamped steel

2020 ◽  
Vol 797 ◽  
pp. 140115 ◽  
Author(s):  
Weijian Chen ◽  
Pengfei Gao ◽  
Shuai Wang ◽  
Xiaolong Zhao ◽  
Zhengzhi Zhao
Keyword(s):  
High Strength ◽  
Strengthening Mechanisms ◽  
Hot Stamped Steel

Developing a high-strength Al-Mg-Si-Sc-Zr alloy for selective laser melting: Crack-inhibiting and multiple strengthening mechanisms

2020 ◽  
Vol 193 ◽  
pp. 83-98 ◽  
Author(s):  
Ruidi Li ◽  
Minbo Wang ◽  
Zhiming Li ◽  
Peng Cao ◽  
Tiechui Yuan ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
High Strength ◽  
Strengthening Mechanisms ◽  
Laser Melting ◽  
Zr Alloy

A Study on Mechanical Properties and Strengthening Mechanisms of AA5052/ZrB2 In Situ Composites

2016 ◽  
Vol 139 (1) ◽  
Author(s):  
Narendra Kumar ◽  
Gaurav Gautam ◽  
Rakesh Kumar Gautam ◽  
Anita Mohan ◽  
Sunil Mohan
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
High Strength ◽  
Strengthening Mechanism ◽  
Strengthening Mechanisms ◽  
In Situ Composites ◽  
Solid Solution Strengthening ◽  
Theoretical Yield ◽  
The Matrix

In the present study, in situ reaction technique has been employed to prepare AA5052 matrix composites reinforced with different vol. % of ZrB2 particles (i.e., 0, 4.5, and 9 vol. %). Composites have been characterized by X-ray diffraction (XRD) to confirm the in situ formation of ZrB2 particles in the matrix. Optical Microscopy (OM) studies reveal the refinement of aluminum-rich phase due to the presence of ZrB2 particles. Scanning electron microscopy (SEM) studies reveal size and distribution of ZrB2 particles while transmission electron microscopy (TEM) reveals the presence of dislocations in the matrix around ZrB2 particles. Hardness and tensile testing of composites have been carried out at room temperature to evaluate the mechanical properties. The results reveal the improvement in hardness and strength with increased amount of ZrB2 particles. Strength of AA5052/ZrB2 in situ composites has been analyzed by various strengthening mechanism models. The analysis revealed that Orowan and Solid solution strengthening mechanisms are the predominant mechanism for high strength composites. Theoretical yield strength is about 6–10% higher than the experimental values due to clustering tendency of ZrB2 particles.

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