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.

Effect of Solution Treatment Temperature on Microstructure and Mechanical Properties of Cr20Ni32AlTi Alloy

2011 ◽  
Vol 194-196 ◽  
pp. 1225-1230
Author(s):  
Chang Chun Yang ◽  
Yong Lin Kang ◽  
Sheng Qin ◽  
Li Xin Wang
Keyword(s):  
Mechanical Properties ◽  
Solution Treatment ◽  
Carbide Precipitation ◽  
Treatment Temperature ◽  
Solution Temperature ◽  
Solution Treatment Temperature ◽  
Precipitation Behavior ◽  
Soaking Time ◽  
Average Grain Size ◽  
Optimum Solution

The effect of solution treatment from 1050°C to 1200°C, soaking time 15min on microstructure, mechanical properties and precipitation behavior of Cr20Ni32AlTi alloy was investigated. The results are as follows: with the increasing of the solution treatment temperature from 1050°C to 1200°C, the average grain size increases remarkably from 17μm to 110μm, the strength of alloy decreases while the elongation increases. The amount of carbide precipitation in the alloy decreases with the increasing of solid solution temperature. The optimum solution treatment temperature for the investigated Cr20Ni32AlTi alloy is 1150°C~1200°C.

scholarly journals Enhancing the Corrosion Resistance Performance of Mg-1.8Zn-1.74Gd-0.5Y-0.4Zr Biomaterial via Solution Treatment Process

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 836 ◽  
Author(s):  
Ya Liu ◽  
Jiuba Wen ◽  
Huai Yao ◽  
Junguang He ◽  
Huan Li
Keyword(s):  
Corrosion Resistance ◽  
Treatment Process ◽  
Cast Alloy ◽  
Solution Treatment ◽  
Treatment Temperature ◽  
Second Phase ◽  
Solution Treatment Temperature ◽  
Uniform Corrosion ◽  
Homogeneous Microstructure ◽  
Solution Treated

Microstructure and corrosion behavior of the solution-treated Mg-1.8Zn-1.74Gd-0.5Y-0.4Zr (wt%) alloy were studied. The results of microstructure indicated that the second phases of as-cast alloy was mainly comprised of Mg12Zn(Gd,Y) phase, Mg3Zn3(Gd,Y)2 phase and (Mg,Zn)3(Gd,Y) phase. After solution treatment process, the second phase gradually dissolved into the matrix, and the grain size increased. The effect of microgalvanic corrosion between α-Mg matrix and second phase was also improved. At the range of 470~510 °C solution treatment temperature, the corrosion resistance of the samples increases at first and then decreases slightly at 510 °C. All the solution-treated Mg-Zn-Gd-Y-Zr samples exhibit better corrosion resistance in comparison with as-cast sample. The existence form of the remaining phase affects the morphology of the corroded surface that relatively complete dissolution with homogeneous microstructure makes the sample more effective to obtain uniform corrosion form. The optimum temperature for solution treatment is 490 °C, which shows a much better corrosion resistance and uniform corrosion form after soaking for a long time.

Effect of Different Solid-Solution Treatment on Microstructure and Mechanical Properties of Alloy 718

2016 ◽  
Vol 852 ◽  
pp. 22-27
Author(s):  
Ming Bo Wang ◽  
An Gang Ning ◽  
Hai Ding Liu ◽  
Yong You Li ◽  
Dong Zhe Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Grain Size ◽  
Solution Treatment ◽  
Treatment Temperature ◽  
Holding Time ◽  
Solution Temperature ◽  
Solution Treatment Temperature ◽  
Alloy 718 ◽  
Solid Solution Treatment

The effects of different solid-solution temperature and holding time on the alloy structure and mechanical properties of alloy 718 were investigated. The results show that the grain size grows up as the solid-solution temperature elevates and the holding time prolongs. The grain size increases slowly because undissolved delta phase restrains the growth of grains when solid-solution temperature is below 1000°C, whereas the grain size increases quickly when solid-solution temperature is beyond 1050°C. At room temperature, the strength and hardness of alloy 718 decrease with solution treatment temperature increasing, however, the ductility and toughness of alloy 718 both increase, and the brittle fracture of sample turns into ductile fracture.

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 Effect of Dissolution of η′ Precipitates on Mechanical Properties of A7075-T6 Alloy

2022 ◽  
Vol 60 (1) ◽  
pp. 83-93
Author(s):  
Young-We Kim ◽  
Yong-Hee Jo ◽  
Yun-Soo Lee ◽  
Hyoung-Wook Kim ◽  
Je-In Lee
Keyword(s):  
Mechanical Properties ◽  
Yield Strength ◽  
Solution Treatment ◽  
Aluminum Matrix ◽  
Natural Aging ◽  
Aging Treatment ◽  
Nucleation Site ◽  
Treatment Temperature ◽  
Solution Treatment Temperature ◽  
Bake Hardening

The effects of dissolution of the η′ phase by solution treatment on the mechanical properties of A7075-T6 alloy were investigated. Immediately after solution treatment of the T6 sheet at 450 oC or higher, elongation significantly increased and dissolution of the η′ phase occurred. η′ is the main hardening phase. After natural-aging, GPI, which is coherent with the aluminum matrix, was formed and strength increased. When bake hardening after natural-aging was performed, the yield strength slightly increased due to partial dissolution of the GPI and re-precipitation of the η′ phase. In contrast, after solution treatment at 400 oC, there was less elongation increase due to the precipitation of the coarse η phase at grain boundaries and low dissolution of the η′ phase. In addition, when bake hardening after natural-aging was performed, the yield strength decreased due to insufficient GPI, which is the nucleation site of the η′ phase. To promote reprecipitation of the η′ phase, the solution treatment temperature was set to a level that would increase solubility. As a result, the yield strength was significantly increased through re-precipitation of a large number of fine and uniform η′ phase. In addition, to increase the effect of dissolution, a pre-aging treatment was introduced and the bake hardenability can be improved after dissolution.

Effect of Boron Addition on Microstructure and Mechanical Properties of AZ84 Mg Alloy

2016 ◽  
Vol 879 ◽  
pp. 653-658
Author(s):  
Ju Hyun Won ◽  
Seok Hong Min ◽  
Tae Kwon Ha
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Solution Treatment ◽  
Treatment Temperature ◽  
Mg Alloy ◽  
Solution Treatment Temperature ◽  
Solid Solution Treatment ◽  
Microstructure And Mechanical Properties ◽  
Peak Aging ◽  
Aging Kinetics

Effect of B addition on the microstructure and mechanical properties of AZ84 Mg alloy was investigated in this study. Through calculation of phase equilibria of AZ84 Mg alloy, carried out by using FactSage® and FTLite database, solution treatment temperature was decided as temperature of 330oC, where supersaturated solid solution can be obtained. Solid solution treatment of AZ84 Mg alloy was successfully conducted at 330oC and supersaturated microstructure with all almost all phases resolved into matrix was obtained. After solution treatment, hot rolling was successfully conducted by reduction of 60%. Compression and tension tests were carried out at room temperature on the samples in as-cast, solution treated, hot-rolled and subsequently recrystallized states. After solid solution treatment, each alloy was soaked at temperatures of 180 and 200oC for time intervals from 1 min to 48 hrs and hardness of each condition was measured by micro-Vickers method. Peak aging conditions were deduced as at the temperature of 200 oC for 10 hrs for ZA84 Mg alloy. By addition of boron, aging kinetics was expedited and strength was enhanced.

scholarly journals Recovery of Microstructure and Mechanical Properties of Service Run GTD-111 DS Buckets

1999 ◽  
Author(s):  
N. S. Cheruvu ◽  
V. P. Swaminathan ◽  
C. D. Kinney
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Solution Treatment ◽  
Partial Solution ◽  
Treatment Temperature ◽  
Solution Treatment Temperature ◽  
High Temperature Solution ◽  
Microstructure And Properties ◽  
Microstructure And Mechanical Properties ◽  
Temperature Solution

Degradation of microstructure and mechanical properties of a service run GTD-111 DS blade was evaluated. The blade was coated with a CoCrAlY coating (GT-29) and had operated on a GE Model MS 5002 engine for 54,850 hours. To recover the microstructure of the degraded blade, the effect of solution treatment temperature on the microstructure and properties was evaluated. The blanks removed from the airfoil tip section were given a commonly used partial solution treatment 2050°F (1120°C) for GTD-111 and a high temperature solution treatment 2175°F (1190°C) prior to the partial solution and aging treatments. Microstructure and creep test results of these heat treated specimens revealed that the high temperature solution treatment was necessary to recover the microstructure and properties of in-service degraded GTD-111 DS buckets.

Effect of Squeeze Casting and Solution Treatment on the Microstructure and Properties of ZA27 Worm Wheel

2015 ◽  
Vol 817 ◽  
pp. 63-70
Author(s):  
Quan Li Zhu ◽  
Zi Yong Wu ◽  
Jia Jian Chen
Keyword(s):  
Mechanical Properties ◽  
Friction And Wear ◽  
Squeeze Casting ◽  
Solution Treatment ◽  
Shrinkage Porosity ◽  
Solution Temperature ◽  
Permanent Mold ◽  
Za27 Alloy ◽  
Mold Casting ◽  
Ε Phase

Compared with permanent mold casting, the microstructure, mechanical properties, friction and wear of squeeze casting ZA27 alloy were studied. The results showed that squeeze casting can reduce or eliminate shrinkage porosity defect, refine or improve the microstructure and the shape and distribution of copper-rich ε phase which leads to the obvious improvement of the performance. In addition, with the increase of solution temperature, higher degree of super-saturation can enhance the tensile strength and hardness of ZA27 alloy. The better deformation coordination is an important factor to the enhancement of elongation. Remelting among grain boundaries leads to the deterioration of performance rapidly.

Effects of Natural Ageing on T6 Heat Treated Rheocasts of 319S Aluminum Alloy

2016 ◽  
Vol 256 ◽  
pp. 58-62 ◽  
Author(s):  
Kang Du ◽  
Qiang Zhu ◽  
Da Quan Li
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Aluminium Alloys ◽  
Solution Treatment ◽  
Treatment Temperature ◽  
Solution Treatment Temperature ◽  
Artificial Ageing ◽  
Natural Ageing ◽  
T6 Heat Treatment ◽  
Semi Solid

T6 heat treatment is an effective method to improve the comprehensive properties of Al-Si-Cu-Mg series aluminium alloys. Solution treatment temperature and time, quench process and media, as well as artificial ageing temperature and time are the key factors to determine mechanical properties. Besides these factors, natural ageing, i.e. the holding time between quenching and the starting of artificial treatment at ambient temperature was observed to be significant affect mechanical properties of the aluminium alloys. This effect on semi solid processed aluminium alloys was lack of investigations as the semi solid process produces T6 treatable and weldable components. The present paper focuses on the change regularity of hardness and precipitate behaviour of semi-solid 319S aluminium alloy under different natural ageing (NA) treatment additional to standard T6. Density and morphology of hardening precipitates are analysed using TEM, and the influence mechanism of NA during T6 heat treatment will be discussed. The results show that NA has a positive influence on mechanical properties of the rheo-cast 319S alloy.

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