Effect of vanadium on hot deformation and microstructural evolution of 7150 aluminum alloy

Shi, Cangji; Chen, X.-Grant

doi:10.1016/j.msea.2014.06.082

Cited by 41 publications

(22 citation statements)

References 34 publications

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“…6. The reason is unclear but it is likely due to the formation of "solute drag" from Mn and Mg atoms [31][32][33], which hinders the movement of dislocation and then lead to the further increase of strength. Fig.…”

Section: Precipitation Of Dispersoids During the Heat Treatmentmentioning

confidence: 99%

Evolution of Elevated-Temperature Strength and Creep Resistance during Multi-Step Heat Treatments in Al-Mn-Mg Alloy

Wang¹,

Liu²,

Wang³

2018

Preprint

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Abstract:Present work has systematically investigated the evolution of dispersoid and elevated-temperature properties including the strength and creep resistance during the various multi-step heat treatments in Al-Mn-Mg 3004 alloys. Results show that only α-Al(MnFe)Si dispersoid is observed in the studied temperature range (up to 625°C) and it coarsens with increasing temperature to 500°C but dissolves at 625°C. The evolution of elevated-temperature strength and creep resistance is greatly related to the temperature of each step during the multi-step heat treatments. Generally, lower temperature at the first-step heat treatment leads to higher properties while the properties decrease with increasing temperature of last-step heat treatment. Suitable models have been introduced to explain the evolution of strength and the creep threshold stress at elevated-temperature during the various heat treatments.

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Section: Precipitation Of Dispersoids During the Heat Treatmentmentioning

confidence: 99%

Evolution of Elevated-Temperature Strength and Creep Resistance during Multi-Step Heat Treatments in Al-Mn-Mg Alloy

Wang¹,

Liu²,

Wang³

2018

Preprint

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“…Therefore, it is feasible to adapt the conventional extrusion and rolling processes with a relatively high pre-heating temperature of up to 500 °C without a remarkable loss of the elevated-temperature properties when materials are first treated with the peak precipitation treatment prior to preheating. On the other hand, it is well known that stable dispersoids can inhibit the recrystallization process and increase the recrystallization temperature in aluminum alloys [25,26], which can further increase the elevatedtemperature properties. The microstructure after extrusion and rolling can be accurately controlled due to the existence of a high volume fraction of dispersoids precipitated in "PH" treatments.…”

Section: Contribution To the Industrial Processmentioning

confidence: 99%

Influence of heat treatment and its sequence on elevated-temperature properties of Al-Mn-Mg 3004 alloy

Liu

Chen

2017

Materials Science and Engineering: A

Self Cite

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Various heat treatments with different sequences between the peak precipitation treatment (375°C/48h, referred to as "P") and the high temperature treatment (450-600 °C, referred to as "H") were performed in Al-Mn-Mg 3004 alloys to simulate their thermal treatments during thermomechanical fabrication processes in the present work. Their influences on the dispersoid precipitation and elevated-temperature properties (yield strength and creep resistance at 300 °C) were investigated. The results indicate that the size of dispersoids increased while the volume fraction of dispersoids decreased with increasing "H" temperature when "P" was performed either prior to or after "H" (denoted as "PH" and "HP", respectively), which results in the reduction of the elevatedtemperature properties. However, the yield strength and creep resistance after "PH" treatments were always higher than those after "HP" treatments at the same "H" temperature. When the "H" temperature during "PH" treatments is controlled below 500°C, the materials can still maintain the appropriate yield strength and creep resistance, providing the possibility for Al-Mn-Mg 3004 alloy to adapt to the conventional fabrication processes but still maintain high elevated-temperature properties.

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“…It has been reported that the addition of V has a significant effect on the microstructure and properties of aluminum alloys [16][17][18][19][20][21]. For example, Esquivel and Gupta [19] found that the hardness of Al-xV alloys increased with a higher V content, which was caused by the solid solution strengthening effect resulted from the high solid solubility of V and grain refinement.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Esquivel and Gupta [19] found that the hardness of Al-xV alloys increased with a higher V content, which was caused by the solid solution strengthening effect resulted from the high solid solubility of V and grain refinement. Shi et al [20] investigated the hot deformation behavior of aluminum alloy 7150 with different V contents and found that the flow stress increased significantly with V additions. The activation energy increased from 229 kJ/mol for the base alloy to 270 kJ/mol for the one containing 0.05 wt.% V, due to the delay of dynamic recrystallization in the latter.…”

Section: Introductionmentioning

confidence: 99%

Role of Vanadium Addition on Hot Deformation Behavior of Aluminum Alloy 5083

Lijuan

Wang

Zhu³

et al. 2019

Metals

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The effect of V addition on the hot deformation behavior of AA5083 was investigated. Single axial compression tests were conducted on the cast and homogenized samples with strain rates ranging from 0.01 to 10 s−1 and deformation temperatures ranging from 300 to 450 °C. The results showed that the contents of V (0–0.10, in wt.%) do not change the grain size of alloy 5083 significantly in the as cast and homogenized conditions, but the formation of fine Al3V particles in the alloy with an addition of 0.05 wt.% V can increase the flow stress, and its activation energy is 10.0% higher than that of V-free alloy 5083. The processing maps show that the appropriate process domain for alloy 5083 with 0.05 wt.% V changes at different true strains. The mechanism for deformation softening is discussed as well.

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Effect of vanadium on hot deformation and microstructural evolution of 7150 aluminum alloy

Cited by 41 publications

References 34 publications

Evolution of Elevated-Temperature Strength and Creep Resistance during Multi-Step Heat Treatments in Al-Mn-Mg Alloy

Evolution of Elevated-Temperature Strength and Creep Resistance during Multi-Step Heat Treatments in Al-Mn-Mg Alloy

Influence of heat treatment and its sequence on elevated-temperature properties of Al-Mn-Mg 3004 alloy

Role of Vanadium Addition on Hot Deformation Behavior of Aluminum Alloy 5083

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