Microstructure and mechanical properties of as cast titanium alloys with high elastic modulus

2014 ◽  
Vol 18 (sup4) ◽  
pp. S4-212-S4-214
Author(s):  
Y. L. Qi ◽  
L. Y. Zeng ◽  
Z. M. Hou ◽  
Q. Hong ◽  
S. B. Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Titanium Alloys ◽  
High Elastic Modulus ◽  
Microstructure And Mechanical Properties

Microstructure and mechanical properties of rolled Mg–Gd–Zn–Zr–Ag–Al–Li alloys

2020 ◽  
Vol 111 (8) ◽  
pp. 645-653
Author(s):  
Xianhua Chen ◽  
Teng Tu ◽  
Tao Chen ◽  
Chunquan Liu ◽  
Fusheng Pan
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Dynamic Recrystallization ◽  
Microstructural Evolution ◽  
Basal Slip ◽  
High Modulus ◽  
High Elastic Modulus ◽  
Microstructure And Mechanical Properties ◽  
Hot Rolled

Abstract The microstructural evolution and mechanical properties of hot rolled Mg-12Gd-1Zn-0.5Zr-0.5Ag (in wt.%) (MGZKA) alloys, with and without Al and Li additions, were investigated in this study. The Al and Li-containing alloys achieved excellent overall mechanical properties, especially MGZKA-6Al5Li alloy with a high elastic modulus of 52.2 GPa and a good plasticity of 15%. Compared with Al and Li-free MGZKA alloy, the fragmented Al2Gd and nanoscale Al2Li3 phases with high modulus are observed in Al and Li-containing MGZKA-4Al3Li and MGZKA-6Al5Li alloys, which contribute to the overall elastic modulus of the alloys. The dynamic recrystallization regions of Al and Li-containing alloys increased while c/a ratio reduced, leading to the weakened texture. The activation of non-basal slip in Al and Li-containing alloys is closely related to the fine grains and weakened texture, which jointly promote the plasticity of Al and Li-containing alloys.

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF DIFFUSION CONNECTIONS FROM Ti6Al4V AND Ti6.5Al2Zr1Mo1V TITANIUM ALLOYS

Metallurg ◽  
2021 ◽  
pp. 61-66
Author(s):  
A.Ya. Travyanov ◽  
P.V. Petrovsky ◽  
V.V. Cheverikin ◽  
A.O. Lagutin ◽  
M.G. Khomutov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloys ◽  
Microstructure And Mechanical Properties

Analysis on the Martensitic Transformation in the Ti-xNb Alloys Using a Phenomenological Theory

2007 ◽  
Vol 124-126 ◽  
pp. 1669-1672 ◽  
Author(s):  
Hi Won Jeong ◽  
Seung Eon Kim ◽  
Chang Yong Jo ◽  
Yong Tae Lee ◽  
Joong Kuen Park
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Martensitic Transformation ◽  
Shape Memory ◽  
Titanium Alloys ◽  
Martensitic Transformations ◽  
Phenomenological Theory ◽  
Transition Elements ◽  
Low Elastic Modulus ◽  
Diffraction Peaks

The titanium alloys containing the Nb transition elements have been investigated as the Ni-free shape memory and the biomedical alloys with a low elastic modulus. The mechanical properties of the alloys depended upon the meta-stable phases like the α`, α``, ω. To study the martensitic transformations from the β to α`` or α` the Ti-xNb (x=0 to 40 wt%) alloys were melted into the button type ingots using a VAR, and followed by the water-quenching after the soaking at 1000oC for 2hrs. The crystallography of the martensitic phases in the water-quenched alloys was analyzed using a XRD. The diffraction peaks of the orthorhombic martensites were identified by the crystallographic relationship with the bcc matrix. The lattice parameters of the orthorhombic martensites were varied continuously with the contents of the Nb elements. The martensitic transformations of the alloys were studied using the phenomenological theory of Bowles and Mackenzie.

scholarly journals Microstructure and Mechanical Properties of Rapidly Solidified β-Type Ti–Fe–Sn–Mo Alloys with High Specific Strength and Low Elastic Modulus

Metals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1135 ◽  
Author(s):  
Li ◽  
Ma ◽  
Jia ◽  
Meng ◽  
Tang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Volume Fraction ◽  
High Yield ◽  
Specific Strength ◽  
High Specific Strength ◽  
Microstructure And Mechanical Properties ◽  
Low Elastic Modulus ◽  
Mo Content ◽  
Rapidly Solidified

The microstructure and mechanical properties of rapidly solidified β-type Ti–Fe–Sn–Mo alloys with high specific strength and low elastic modulus were investigated. The results show that the phases of Ti–Fe–Sn–Mo alloys are composed of the β-Ti, α-Ti, and TiFe phases; the volume fraction of TiFe phase decreases with the increase of Mo content. The high Fe content results in the deposition of TiFe phase along the grain boundary of the Ti phase. The Ti75Fe19Sn5Mo1 alloy exhibits the high yield strength, maximum compressive strength, large plastic deformation, high specific strength, high Vickers hardness, and large toughness value, which is a superior new engineering material. The elastic modulus (42.1 GPa) of Ti75Fe15Sn5Mo5 alloy is very close to the elastic modulus of human bone (10–30 GPa), which indicating that the alloy can be used as a good biomedical alloy. In addition, the large H/Er and H3/Er2 values of Ti75Fe19Sn5Mo1 alloy indicate the good wear resistance and long service life as biomedical materials.

Influence of Annealing on the Microstructure and Mechanical Properties of Electrodeposited Nanocrystalline Nickel

2011 ◽  
Vol 683 ◽  
pp. 103-112 ◽  
Author(s):  
B. Yang
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Elastic Modulus ◽  
Grain Boundary ◽  
Boundary Structure ◽  
Boundary State ◽  
Microstructure And Mechanical Properties ◽  
Grain Boundary Structure ◽  
Average Grain Size ◽  
Different Grain Size

The evolution of the microstructure and mechanical properties of electrodeposited nanocrystalline Ni with different annealing procedures was studied systematically. For the annealed specimens hardness decreases with increasing average grain size but the dependence changes at different grain size ranges. The specimens annealed at a low temperature show higher hardness compared to the as-deposited nanocrystalline Ni, despite an increased measured average grain size. In association with this hardening an increase in elastic modulus and a decrease in microstrain was observed after annealing. With increasing annealing temperature both the tensile strength and the fracture strain were observed to decrease, this is companied with a transition from ductile to brittle in the fracture surfaces. These results indicated that the mechanical behaviour of nanocrystalline Ni depends not only on the average grain size but also on the grain boundary structure. A change in the grain boundary state arising from annealing may be responsible for the observed increase in hardness and elastic modulus as well as the deterioration of tensile properties.

Effect of Hydrogenation Pressure on Microstructure and Mechanical Properties of Ti-13Nb-13Zr Alloy Produced by Powder Metallurgy

2010 ◽  
Vol 660-661 ◽  
pp. 176-181
Author(s):  
José Hélio Duvaizem ◽  
Gabriel Souza Galdino ◽  
Ana Helena A. Bressiani ◽  
Rubens Nunes de Faria Jr. ◽  
Hidetoshi Takiishi
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Powder Metallurgy ◽  
High Energy ◽  
Dynamic Mechanical Analyzer ◽  
Powder Alloys ◽  
Microstructure And Mechanical Properties ◽  
13Zr Alloy ◽  
Displacement System ◽  
Liquid Displacement

The effects of the hydrogenation stage on microstructure and mechanical properties of Ti-13Nb-13Zr alloy produced by powder metallurgy have been studied. Powder alloys have been produced by hydrogenation with 250 MPa or 1 GPa and via high energy planetary ball milling. Samples were isostatically pressed at 200 MPa and sintered at 1150 °C for 7, 10 and 13 hours. Elastic modulus and microhardness were determined using a dynamic mechanical analyzer (DMA) and a Vickers microhardness tester. Density of the samples was measured using a liquid displacement system. Microstructure and phases presents were analyzed employing scanning electron microscopy (SEM). Elastic modulus was 81.3  0.8 and 62.6  0.6 GPa for samples produced by 250 MPa and 1 GPa hydrogenation, respectively when sintered for 7h.

Sign in / Sign up

Export Citation Format

Share Document