Enhanced age-hardening response and mechanical properties of the Mg-Gd-Y-Zn-Zr alloy by trace Ag addition

2021 ◽  
pp. 159825
Author(s):  
Cen Huang ◽  
Chuming Liu ◽  
Shunong Jiang ◽  
Yingchun Wan
Keyword(s):  
Mechanical Properties ◽  
Age Hardening ◽  
Ag Addition ◽  
Zr Alloy

scholarly journals Effects of Gd, Y Content on the Microstructure and Mechanical Properties of Mg-Gd-Y-Nd-Zr Alloy

Metals ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 790 ◽  
Author(s):  
Changping Tang ◽  
Kai Wu ◽  
Wenhui Liu ◽  
Di Feng ◽  
Xuezhao Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Solution Treatment ◽  
Age Hardening ◽  
Uniaxial Tensile ◽  
Microstructure And Mechanical Properties ◽  
Shaped Particle ◽  
Zr Alloy ◽  
Non Equilibrium

The effects of Gd, Y content on the microstructure and mechanical properties of Mg-Gd-Y-Nd-Zr alloy were investigated using hardness measurements, X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), and uniaxial tensile testing. The results indicate that the alloys in as-cast condition mainly consist of α-Mg matrix and non-equilibrium eutectic Mg5.05RE (RE = Gd, Y, Nd). After solution treatment, the non-equilibrium eutectics dissolved into the matrix but some block shaped RE-rich particles were left at the grain boundaries and within grains. These particles are especially Y-rich and deteriorate the mechanical properties of the alloys. Both the compositions of the eutectic and the block shaped particle were independent of the total Gd, Y content of the alloys, but the number of the particles increases as the total Gd, Y content increases. The ultimate tensile strength increases as the total Gd, Y content decreases. A Mg-5.56Gd-3.38Y-1.11Nd-0.48Zr alloy with the highest ultimate tensile strength of 280 MPa and an elongation of 1.3% was fabricated. The high strength is attributed to the age hardening behavior and the decrease in block shaped particles.

Effect of Ag addition on the age hardening and precipitation behavior in an Al-Cu-Li-Mg-Zn-Mn-Zr alloy

2020 ◽  
Vol 162 ◽  
pp. 110184
Author(s):  
Bo Jiang ◽  
Haisheng Wang ◽  
Danqing Yi ◽  
Yu Tian ◽  
Fanghua Shen ◽  
...  
Keyword(s):  
Age Hardening ◽  
Precipitation Behavior ◽  
Ag Addition ◽  
Zr Alloy

Effects of Gadolinium on Aging Behavior and Mechanical Properties of Mg-5Y-3Nd-Zr Alloy

2011 ◽  
Vol 295-297 ◽  
pp. 1183-1187
Author(s):  
Li Dong Wang ◽  
Cheng Yao Xing ◽  
Xiu Li Hou ◽  
Yao Ming Wu ◽  
Jian Fei Sun ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fracture Morphology ◽  
Age Hardening ◽  
Peak Hardness ◽  
Homogeneous Distribution ◽  
Aging Behavior ◽  
The Matrix ◽  
Cast Alloys ◽  
Mould Casting ◽  
Zr Alloy

Mg-5Y-3Nd-Zr-xGd (x=0 and 4 wt.%) alloys were prepared by metal mould casting, and aging behavior, mechanical properties and fracture morphology were investigated. The result shows that after T6 treatment, the massive eutectic phase in as-cast alloys dissolved and finer Mg5RE phase precipitated dispersively in the matrix, and mechanical properties were improved simultaneously. Mg-5Y-3Nd-4Gd-Zr alloy exhibits good age hardening behavior and the peak hardness is about 20% higher than the Gd-free alloy. Gd addition can significantly improve mechanical properties of the alloy especially at the elevated temperature. The ultimate tensile strength and yield strength of Mg-5Y-3Nd-4Gd-Zr alloy at 250°C, with the value of 276 and 168 MPa, respectively, are over 20% higher than those of the Gd-free alloy. It is mainly attributed to the increase and homogeneous distribution of the fine heat-resistant Mg5RE precipitate in the matrix.

Effect of Sc and Zr Additions on Microstructure and Mechanical Properties of Conventional Cast and P/M Aluminium

2007 ◽  
Vol 567-568 ◽  
pp. 357-360 ◽  
Author(s):  
M. Kolář ◽  
Vladivoj Očenášek ◽  
J. Uhlíř ◽  
Ivana Stulíková ◽  
Bohumil Smola ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Plastic Deformation ◽  
Powder Metallurgy ◽  
High Temperatures ◽  
Age Hardening ◽  
Cold Rolled ◽  
Deformation And Heat Treatment ◽  
Zr Alloy ◽  
Hardening And Softening

The influence of plastic deformation and heat-treatment on the precipitation of Al3(Sc, Zr) particles and the effect of these precipitates on hardening and softening processes of dilute ternary Al-0.2wt.%Sc-0.1wt.%Zr alloy was investigated. Behaviour of two differently prepared alloys (mold cast and prepared by powder metallurgy – PM) was investigated in as-prepared and in cold rolled state. Both alloys exhibit the same peak age hardening, PM one reaches it already during extrusion at 350°C. Both cold rolled alloys are highly resistant against recovery, which proceeds without rapid hardness decrease at high temperatures. Evolution of hardness agrees well with that of resistivity and with TEM observation.

scholarly journals Age-hardening behaviors and mechanical properties of Al-Li-Cu-Mg-Zr alloy.

1987 ◽  
Vol 37 (7) ◽  
pp. 496-502 ◽  
Author(s):  
Tadakazu OHNISHI ◽  
Hideaki SHIOTA ◽  
Taichiro ITO
Keyword(s):  
Mechanical Properties ◽  
Age Hardening ◽  
Zr Alloy

The Effect of Y on Aging Response and Mechanical Properties of Mg-Ho-Zr Alloys

2011 ◽  
Vol 704-705 ◽  
pp. 546-551
Author(s):  
Bao Zhong Liu ◽  
Jiao Jiao Liu ◽  
Jian Li Wang ◽  
Bao Qing Zhang ◽  
Zhi Zhang
Keyword(s):  
Mechanical Properties ◽  
Age Hardening ◽  
Stable Phase ◽  
Hardening Behavior ◽  
Aging Response ◽  
Cast Alloys ◽  
Peak Aged ◽  
Aged State ◽  
Alloy Microstructure ◽  
Zr Alloy

Mg-10Ho-0.6Zr alloys with different amount of Y additions are prepared by metal mould casting method. The effects of Y content on microstructure, age hardening behavior and mechanical properties are investigated. Results show that all the as-cast Mg-10Ho-xY-0.6Zr alloys are mainly comprised of α-Mg matrix and Mg24(Ho,Y)5phase. With increasing Y content, grain size of the as-cast alloys is reduced. Age hardening response, Vickers hardness and mechanical properties are improved with the addition of Y. The maximum ultimate tensile strength (UTS) and yield strength (YS) are obtained in Mg-10Ho-3Y-0.6Zr alloy at peak-aged state, and the values are 215 MPa, 158 MPa at room temperature, and 144 MPa, 126 MPa at 250 °C, respectively. The improvement of the UTS is mainly attributed to the fine distributed quadrate-like β stable phase. Key words: Mg-Ho-Y-Zr alloy; Microstructure; Age hardening behavior; Mechanical properties

CONDULOY

Alloy Digest ◽  
1953 ◽  
Vol 2 (10) ◽  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Physical Properties ◽  
Tensile Properties ◽  
Copper Alloy ◽  
Heat Treating ◽  
Age Hardening ◽  
Beryllium Copper ◽  
Hardening Heat Treatment

Abstract CONDULOY is a low beryllium-copper alloy containing about 1.5% nickel. It responds to age-hardening heat treatment for improved mechanical properties. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on casting, heat treating, machining, and joining. Filing Code: Cu-11. Producer or source: Brush Beryllium Company.

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