Annealing effects in commercial aluminium hot-rolled 7075(–Sc–Zr) alloys

The development of new low-cost alloys composed of common elements that show high biocompatibility and mechanical properties matching with human bone is the target of many researches recently. Design and controlling the mechanical properties of newly developed set of Ti-xFe-3Zr-yNb (x=3-8 & y=2-3, at.%) low-cost alloys through applying different thermomechanical treatments is the aim of this work. Fe-content in the present designed alloys is changing in the range 3 to 8 at.%. The hardness and Young's modulus of the alloys were measured for the alloys in the solution treated, hot rolled and subsequent ageing at 400 °C and 550 °C. The phases separation and hence hardness of the aged alloys at 400 °C and 550 °C are highly dependent on the Fe-content in the alloy. The Young's modulus of the alloys is also changing with the Fe-content and heat treatment, where lowest modulus (~80GPa) is shown in the Ti-5Fe-3Zr-3Nb alloy in the solution treated condition.

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Annealing effects on the microstructure and mechanical properties of hot-rolled 14Cr-ODS steel

Journal of Nuclear Materials ◽

10.1016/j.jnucmat.2015.05.038 ◽

2015 ◽

Vol 465 ◽

pp. 268-279 ◽

Cited By ~ 8

Author(s):

R. Gao ◽

T. Zhang ◽

H.L. Ding ◽

Y. Jiang ◽

X.P. Wang ◽

...

Keyword(s):

Mechanical Properties ◽

Ods Steel ◽

Microstructure And Mechanical Properties ◽

Annealing Effects ◽

Hot Rolled

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A Quantitative Method to Examine Through Thickness Texture Variation

Textures and Microstructures ◽

10.1155/tsm.21.109 ◽

1993 ◽

Vol 21 (2-3) ◽

pp. 109-120 ◽

Cited By ~ 5

Author(s):

S. Saimoto ◽

R. G. Kamat ◽

P. Clarke ◽

P. van Houte

Keyword(s):

Quantitative Method ◽

Transverse Direction ◽

Rolling Texture ◽

Orthorhombic Symmetry ◽

Monoclinic Symmetry ◽

Peak Intensity ◽

Pole Figures ◽

Commercial Aluminium ◽

Hot Rolled ◽

Commercial Sheet

Through thickness texture variation is a reality in commercial sheet stock. However, methods to quantitatively evaluate this variation and its effects are not readily available. In this study, it was shown that a hot rolled commercial aluminium sheet manifests variation in rolling texture components which can be detected by traverse scan of the peak intensity across the through thickness using tapered specimens. Moreover, this asymmetry can be correlated to the intensity asymmetry observed in pole figures. A quantitative analysis is possible if the ODF is generated using monoclinic symmetry with the transverse direction as the diad axis instead of the conventional orthorhombic symmetry.

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Effect of rolling on the fractional recrystallization behaviour of Al-Mg and Al-Mg-Zr alloys

Journal of Mechanical Engineering ◽

10.3329/jme.v48i1.41091 ◽

2019 ◽

Vol 48 (1) ◽

pp. 24-29

Author(s):

M. S. Kaiser ◽

K. M. Shorowordi ◽

H. M. Mamun Al Rashed

Keyword(s):

Mg Alloy ◽

Micro Hardness ◽

Type Analysis ◽

Annealing Temperatures ◽

Hardness Variation ◽

High Annealing ◽

Cold Rolled ◽

Hot Rolled ◽

Zr Alloy ◽

Zr Alloys

One set of Al–Mg and Al-Mg-Zr alloys are directly cold rolled and other set of those alloys are hot rolled and then cold rolled using a laboratory rolling mill. The effect of rolling on the fractional recrystallization of the alloys has been investigated using the micro-hardness variation. Isothermally annealed samples are also studied using JMAK type analysis to see if there exists any correlation between experimental and JMAK type analysis. From the microstructure, it is observed that the Al-Mg alloy becomes almost fully recrystallized state after annealing at 600°K for 60 minutes. The results also show that recrystallization fraction obtained by the two methods, shows the higher variation in zirconium added Al-Mg alloy as compared to the Al-Mg alloy. The fractional recrystallization of the cold rolled Al-Mg-Zr alloy is significantly lower than that of cold rolled Al-Mg alloy and hot and colled rolled Al-Mg-Zr, owing to the presence of fine Al3Zr precipitates. These metastable L12 Al3Zr precipitates are thermally stable at high annealing temperatures.

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Evaluation of Microstructures of Hot-Rolled Mg-La-Zr Alloys

Journal of the Japan Society for Technology of Plasticity ◽

10.9773/sosei.57.140 ◽

2016 ◽

Vol 57 (661) ◽

pp. 140-145 ◽

Cited By ~ 2

Author(s):

Junji TACHIBANAKI ◽

Yosuke TAMURA ◽

Genjiro MOTOYASU ◽

Hiroshi SODA ◽

McLEAN Alexander

Keyword(s):

Hot Rolled ◽

Zr Alloys

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Microstructure and mechanical properties of hot-rolled Mg–Zn–Nd–Zr alloys

Materials Science and Engineering A ◽

10.1016/j.msea.2006.09.149 ◽

2008 ◽

Vol 483-484 ◽

pp. 228-230 ◽

Cited By ~ 26

Author(s):

Wenjiang Ding ◽

Daquan Li ◽

Qudong Wang ◽

Qiang Li

Keyword(s):

Mechanical Properties ◽

Microstructure And Mechanical Properties ◽

Hot Rolled ◽

Zr Alloys

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Annealing effects in hot-deformed Al-Mn-Sc-Zr alloys

Metallic Materials ◽

10.4149/km_2015_5_295 ◽

2016 ◽

Vol 52 (05) ◽

pp. 295-304 ◽

Cited By ~ 7

Author(s):

M. VLACH ◽

I. STULÍKOVÁ ◽

B. SMOLA ◽

T. KEKULE ◽

H. KUDRNOVÁ ◽

...

Keyword(s):

Annealing Effects ◽

Zr Alloys

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Precipitation in Al-Li-Zr alloys

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100121338 ◽

1992 ◽

Vol 50 (1) ◽

pp. 186-187

Author(s):

D.M. Vanderwalker

Keyword(s):

Fracture Toughness ◽

Precipitation Hardening ◽

Weight Ratio ◽

High Strength ◽

Transmission Electron ◽

Water Quench ◽

Aluminum Lithium ◽

Aluminum Lithium Alloys ◽

Lithium Alloys ◽

Zr Alloys

Aluminum-lithium alloys have a low density and high strength to weight ratio. They are being developed for the aerospace industry.The high strength of Al-Li can be attributed to precipitation hardening. Unfortunately when aged, Al-Li aquires a low ductility and fracture toughness. The precipitate in Al-Li is part of a sequence SSSS → Al3Li → AlLi A description of the phases may be found in reference 1 . This paper is primarily concerned with the Al3Li phase. The addition of Zr to Al-Li is being explored to find the optimum in properties. Zirconium improves fracture toughness and inhibits recrystallization. This study is a comparision between two Al-Li-Zr alloys differing in Zr concentration.Al-2.99Li-0.17Zr(alloy A) and Al-2.99Li-0.67Zr (alloy B) were solutionized for one hour at 500oc followed by a water quench. The specimens were then aged at 150°C for 16 or 40 hours. The foils were punched into 3mm discs. The specimens were electropolished with a 1/3 nitric acid 2/3 methanol solution. The transmission electron microscopy was conducted on the JEM 200CX microscope.

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