Enhanced grain refinement and mechanical properties of a high–strength Al–Zn–Mg–Cu–Zr alloy induced by TiC nano–particles

Zhao, Kai; Gao, Tong; Yang, Huabing; Hu, Kaiqi; Liu, Guiliang; Sun, Qianqian; Nie, Jinfeng; Liu, Xiangfa

doi:10.1016/j.msea.2021.140852

Cited by 75 publications

(20 citation statements)

References 55 publications

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“…If the solidification cracking susceptibility for these alloys are calculated (as mentioned elsewhere [10,39]), it can be seen that such 7017 Al-alloys have high cracking susceptibility. Formation of primary Al 3 Zr during solidification [6,9] and presence of TiC powder in the melt [40] would act as heterogeneous nucleation sites leading to refined primary Al-grains thus avoiding solidification cracking. The resulting Al-grain refinement would also result in enhanced yield strength [41] due to well-known Hall-Petch effect.…”

Section: Discussionmentioning

confidence: 99%

Microstructure, mechanical properties and fracture mechanisms in a 7017 aluminium alloy tailored for powder bed fusion – laser beam

Mehta¹,

Mishurova²,

Evsevleev³

et al. 2023

Materials & Design

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Section: Discussionmentioning

confidence: 99%

Microstructure, mechanical properties and fracture mechanisms in a 7017 aluminium alloy tailored for powder bed fusion – laser beam

Mehta¹,

Mishurova²,

Evsevleev³

et al. 2023

Materials & Design

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“…Therefore, it can be predicted that the strain-induced dislocations increase significantly after USRP processing. The positive correlation between KAM and the geometrically necessary dislocation density GND ρ is calculated by Equation 2 [30][31][32] :…”

Section: Plastic Deformation and Grain Refinement Analysismentioning

confidence: 99%

Surface Microstructure Refinement and Mechanical Properties of GCr15 Steels Improved During Ultrasonic Surface Rolling Processing

Xue

et al. 2023

Mat. Res.

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In this paper, ultrasonic surface rolling processing (USRP) was used to strengthen GCr15-bearing steel. A finite element three-dimensional model of USRP was established to analyze the residual compressive stress and equivalent plastic strain distribution on the bearing steel surface. The microstructure, hardness, surface roughness, and corrosion resistance before and after USRP treatment were characterized by SEM, EBSD, X-ray diffraction (XRD), and electrochemical techniques. Results indicated that USRP treatment can significantly improve the material's surface microstructure and residual compressive stress distribution and obtain a plastic strain layer of about 60μm. After USRP treatment, the Kernel Average Misorientation (KAM) increased, and the dislocation activity was more intensive, resulting in aggregation near grain boundaries, and the percentage of LAGBs increased to 38.8%. Under the combined effect of surface grain refinement, residual compressive stress, and high glossy surface, the self-corrosion current density is reduced by two orders of magnitude, and the corrosion resistance is significantly improved. This investigation suggests a solution to the bearing failure problem and has implications for understanding the deformation mechanism of ultrasonic surface rolling processing.

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“…However, both master alloys are prone to unstable refinement effects, and the TiC and TiB 2 particles tend to precipitation and intercalation, which reduces the quality of the alloy product. Therefore, developing the efficient grain refiners within an acceptable and manageable range is critical [ 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Al-5Ti-0.25C-0.25B and Al-5Ti-1B Master Alloys on the Microstructure and Mechanical Properties of Al-9.5Si-1.5Cu-0.8Mn-0.6Mg Alloy

Wen

et al. 2023

Materials

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The goal of this research was to determine how the master alloys Al-5Ti-0.25C-0.25B and Al-5Ti-1B affected the mechanical properties and structural characteristics of the alloy Al-9.5Si-1.5Cu-0.8Mn-0.6Mg. Field emission scanning electron microscopy (FE-SEM) was used to probe the microscopic composition, and the mechanical properties were evaluated using tensile testing. The results showed that, by adding 0.5% Al-5Ti-0.25C-0.25B master alloy and 0.5% Al-5Ti-1B master alloy, the α-Al dendrites can be significantly refined. In the extrusion state, the ultimate tensile strength and elongation with 0.5% Al-5Ti-0.25C-0.25B master alloy reached 380 MPa and 11.2%, which were 5.5% and 22.4% higher than no refinement, respectively. The elongation of the samples with the Al-5Ti-1B alloy addition increased from 9% to 11.9%, which is attributed to the fact that more pronounced complete recrystallization occurred during the extrusion heat treatment.

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Enhanced grain refinement and mechanical properties of a high–strength Al–Zn–Mg–Cu–Zr alloy induced by TiC nano–particles

Cited by 75 publications

References 55 publications

Microstructure, mechanical properties and fracture mechanisms in a 7017 aluminium alloy tailored for powder bed fusion – laser beam

Microstructure, mechanical properties and fracture mechanisms in a 7017 aluminium alloy tailored for powder bed fusion – laser beam

Surface Microstructure Refinement and Mechanical Properties of GCr15 Steels Improved During Ultrasonic Surface Rolling Processing

Effect of Al-5Ti-0.25C-0.25B and Al-5Ti-1B Master Alloys on the Microstructure and Mechanical Properties of Al-9.5Si-1.5Cu-0.8Mn-0.6Mg Alloy

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