Improvement in Strength of 2024 Al Alloy by Enhanced Solution Treatment

2005 ◽  
Vol 297-300 ◽  
pp. 2362-2367 ◽  
Author(s):  
Xiao Jing Xu ◽  
Seock Sam Kim ◽  
Y.S. Zheng
Keyword(s):  
Tensile Ductility ◽  
Solution Treatment ◽  
Melting Behavior ◽  
Solution Temperature ◽  
Al Alloy ◽  
Incipient Melting ◽  
Tension Testing ◽  
Constituent Phase ◽  
Conventional Solution ◽  
Phase Solution

In this paper the effects of an enhanced solution and aging on the strengthening behavior of commercially available 2024Al alloy were investigated using tension testing and scanning electron microscopy. A differential scanning calorimeter (DSC) was used to measure the incipient melting behavior and then determine the technological parameter of an enhanced solution heat treatment for strengthening the 2024Al alloy. The results show that the incipient melting behavior of the commercially available 2024Al alloy was characterized by a small amount of liquid phase between the temperatures 773K to 788K. A solution treatment, appropriately enhanced by slowly increasing the solution temperature from 773K to 783K at a heating rate of 5K/h, can make the final solution temperature of the alloy higher than the conventional solution temperature of 773K. This improves the constituent phase solution without the formation of overheated microstructures. The results are the strength, especially the yield strength, and the resistance to over-aging can both be considerably improved without a large deterioration to tensile ductility.

scholarly journals Optimization of a Solution Treatment in the Al-Cu-Mg-Ag Alloy via a Microstructural Investigation

Metals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 66
Author(s):  
Hyeongsub So ◽  
Jae-Hong Shin ◽  
Leeseung Kang ◽  
Chanuk Jeong ◽  
Kyou-Hyun Kim
Keyword(s):  
Mechanical Properties ◽  
Mechanical Strength ◽  
Grain Growth ◽  
Microstructural Evolution ◽  
Precipitation Hardening ◽  
Solution Treatment ◽  
Solution Temperature ◽  
Al Alloy ◽  
Microstructural Investigation ◽  
Large Particles

We investigated the effect of solution temperature (Tsol. = 440–530 °C) on the mechanical properties of the Al–3.4Cu–0.34Mg–0.3Mn–0.17Ag alloy, finding that the investigated Al alloy showed the highest mechanical strength of σUTS = ~329 MPa at a Tsol. value of 470 °C. The microstructural investigation demonstrates that the mechanical properties for different Tsol. values stem from grain growth, precipitation hardening, and the formation of large particles at the grain boundaries. On the basis of Tsol. = 470 °C, the effect of each microstructural evolution is significantly different on the mechanical properties. In this study, the relationships between the microstructural evolution and the mechanical properties were investigated with respect to different values of Tsol.

Influences of Solution Treatment, Deformation Strain and Nanometric Al2O3 Particulate on Hardness for Nanometric Al2O3 Particulate Reinforced Al Alloy Matrix Composites Manufactured by Casting

2012 ◽  
Vol 430-432 ◽  
pp. 88-91
Author(s):  
Yong Biao Yang ◽  
Zhi Min Zhang ◽  
Mu Meng
Keyword(s):  
Solution Treatment ◽  
Solution Temperature ◽  
Al Alloy ◽  
Matrix Composites ◽  
Alloy Matrix ◽  
Deformation Strain ◽  
Microstructure Observation ◽  
Deformation And Heat Treatment ◽  
Particulate Reinforced ◽  
Al Matrix

The influences of solution treatment, deformation strain, and nanometric Al2O3 particulate on hardness for nanometric Al2O3 particulate reinforced Al alloy matrix Composites manufactured by casting were investigated. The result showed that both the hardness of AL matrix and the hardness of the composites increased dramatically with increasing solution temperatures. The hardness increased slightly with increasing deformation strain for the composites. The hardness of the composites is higher than the AL matrix after the same deformation and heat treatment. Microstructure observation revealed that the grain sizes of the composites increased with increasing solution temperature and decreased with more severe deformation.

Influences of Solution Treatment, Deformation Strain, and Nanometric Al2O3 Particulate on Dry Wear Properties for Nanometric Al2O3 Particulate Reinforced Al Alloy Matrix Composites Manufactured by Casting

2012 ◽  
Vol 628 ◽  
pp. 3-6
Author(s):  
Yong Biao Yang ◽  
Zhi Min Zhang ◽  
Xing Zhang
Keyword(s):  
Wear Resistance ◽  
Solution Treatment ◽  
Solution Temperature ◽  
Al Alloy ◽  
Matrix Composites ◽  
Wear Properties ◽  
Alloy Matrix ◽  
Deformation Strain ◽  
Particulate Reinforced ◽  
Al Matrix

The influences of solution treatment, deformation strain, and nanometric Al2O3 particulate on dry wear properties for nanometric Al2O3 particulate reinforced Al alloy matrix Composites manufactured by casting were investigated. The result showed that both the wear resistance of AL matrix and the composites increased rapidly with increasing solution temperatures. The wear resistance increased slightly with increasing deformation strain for the composites. The wear resistance of the composites is higher than the AL matrix after the same deformation and heat treatment. Microstructure observation revealed that the grain sizes of the composites increased with increasing solution temperature and decreased with more severe deformation. Abrasive wear was the main wear mechanism both for the AL matrix and the composites.

Effect of Solution Treatment Temperature on Properties of an Al11Si3Cu0.35Mg Cast Alloy

2007 ◽  
Vol 353-358 ◽  
pp. 357-360
Author(s):  
Gui Qing Wang ◽  
Zhong Kui Zhao ◽  
Yan Liu
Keyword(s):  
Mechanical Properties ◽  
Cast Alloy ◽  
Solution Treatment ◽  
Treatment Temperature ◽  
Solution Temperature ◽  
Solution Treatment Temperature ◽  
Permanent Mold ◽  
Incipient Melting ◽  
Solution Treated ◽  
Alloy Properties

The present work was performed on Al11Si3Cu0.35Mg samples cast in a permanent mold preheated to 200 °C. The tensile properties for varies solution treated samples aged at 200 °C for 6 h were examined in order to study the influence of solution temperature on the alloy properties. The dissolution of copper-containing phases and the incipient melting were analyzed for cast samples solution treated in the temperature range 500~520 °C for 8 h followed by quenching in water. The influence of the incipient melting on mechanical properties has been discussed.

The Effect of Enhanced Solution Treatment on Microstructures and Properties of 6013 Type Aluminum Alloy

2015 ◽  
Vol 1088 ◽  
pp. 148-152 ◽  
Author(s):  
Fu Bao Zhang ◽  
Tong Ming Tang ◽  
Yu Feng Zhao ◽  
Xiao Jing Xu ◽  
Zhi Lan Ju ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Solution Treatment ◽  
Resistance Testing ◽  
Strength Increase ◽  
Tension Testing ◽  
Resistance Decrease ◽  
Conventional Solution ◽  
Tensile Strength Increase

The effect of enhanced solution treatment on microstructures, tensile properties, intergranular corrosion and exfoliation corrosion of a 6013 type aluminum alloy proceeded via various solution treatment were investigated by optical microscopy (OM), scanning electron microscopy (SEM), tension testing and corrosion resistance testing. The results show that compared with the conventional solution treatment (560°C×2 h), the enhanced solution treatment (560°C×2 h+570°C×2 h) can improve ultimate tensile strength and elongation, the corrosion resistance become worse after 151°C×8 h+191°C×8 h artificial aging. The tensile strength increase is believed to resulting from the coarse second phases dissolve. The corrosion resistance decrease is due to grain growth.

scholarly journals Study on Ultra-High Temperature Contact Solution Treatment of Al–Zn–Mg–Cu Alloys

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 842
Author(s):  
Wenming Jin ◽  
Jianhao Yu ◽  
Zhiqiang Zhang ◽  
Hongjie Jia ◽  
Mingwen Ren
Keyword(s):  
Heating Temperature ◽  
Solution Treatment ◽  
Strengthening Mechanism ◽  
Heating Time ◽  
Solution Time ◽  
Solution Temperature ◽  
Second Phase ◽  
Total Strength ◽  
Cu Alloys ◽  
Short Heating Time

Contact solution treatment (CST) of Al–Zn–Mg–Cu alloys can shorten solution time to within 40 s in comparison with 1800 s with traditional solution treatment using a heating furnace. Heating temperature is the key factor in solution treatment. Considering the short heating time of CST, the ultra-high solution temperature over 500 °C of Al–Zn–Mg–Cu alloys was studied in this work. The effects of solution temperatures on the microstructures and the mechanical properties were investigated. The evolution of the second phases was explored and the strengthening mechanisms were also quantitatively evaluated. The results showed that solution time could be reduced to 10 s with the solution temperature of 535 °C due to the increasing dissolution rate of the second phase and the tensile strength of the aged specimen could reach 545 MPa. Precipitation strengthening was the main strengthening mechanism, accounting for 75.4% of the total strength. Over-burning of grain boundaries occurred when the solution temperature increased to 555 °C, leading to the deterioration of the strength.

Effect of Solution Treatment on Microstructures and Hardness of Mg-Gd-Y-Zr Alloy

2014 ◽  
Vol 937 ◽  
pp. 182-186
Author(s):  
Quan An Li ◽  
Lei Lei Chen ◽  
Wen Chuang Liu ◽  
Xing Yuan Zhang ◽  
Hui Zhen Jiang
Keyword(s):  
Vickers Hardness ◽  
Cast Alloy ◽  
Solution Treatment ◽  
Hardness Measurement ◽  
Solution Temperature ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solution Treated ◽  
Primary Particles ◽  
Zr Alloy

The influence of the solution treatment (at the temperature of 500-520°C for 4-12 h) on microstructures and mechanical properties of Mg-Gd-Y-Zr alloy was investigated by means of optical microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and Vickers hardness measurement. The as-cast alloy contains a microstructure consisting of α-Mg matrix, Mg5Gd phase and Mg24Y5phase. With increasing solution temperature and time, the quantity of the primary particles (Mg5Gd and Mg24Y5) in the alloy continually decreased, and the degree of recrystallization gradually increased, which result in the gradual decrease of the Vickers hardness of the solution-treated alloys.

scholarly journals The Effect of Heat Treatment on the Microstructure and Mechanical Properties of the Novel Low-Cost Ti-3Al-5Mo-4Cr-2Zr-1Fe Alloy

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3798
Author(s):  
Meng Sun ◽  
Dong Li ◽  
Yanhua Guo ◽  
Ying Wang ◽  
Yuecheng Dong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Aging Time ◽  
Volume Fraction ◽  
Low Cost ◽  
Solution Treatment ◽  
Solution Temperature ◽  
The Novel ◽  
Α Phase ◽  
The Cost

In order to reduce the cost of titanium alloys, a novel low-cost Ti-3Al-5Mo-4Cr-2Zr-1Fe (Ti-35421) titanium alloy was developed. The influence of heat treatment on the microstructure characteristics and mechanical properties of the new alloy was investigated. The results showed that the microstructure of Ti-35421 alloy consists of a lamina primary α phase and a β phase after the solution treatment at the α + β region. After aging treatment, the secondary α phase precipitates in the β matrix. The precipitation of the secondary α phase is closely related to heat treatment parameters—the volume fraction and size of the secondary α phase increase when increasing the solution temperature or aging time. At the same solution temperature and aging time, the secondary α phase became coarser, and the fraction decreased with increasing aging temperature. When Ti-35421 alloy was solution-treated at the α + β region for 1 h with aging surpassing 8 h, the tensile strength, yield strength, elongation and reduction of the area were achieved in a range of 1172.7–1459.0 MPa, 1135.1–1355.5 MPa, 5.2–11.8%, and 7.5–32.5%, respectively. The novel low-cost Ti-35421 alloy maintains mechanical properties and reduces the cost of materials compared with Ti-3Al-5Mo-5V-4Cr-2Zr (Ti-B19) alloy.

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