Mechanical properties and deformation mechanisms of Ti-3Al-5Mo-4.5 V alloy with varied β phase stability

2018 ◽  
Vol 34 (12) ◽  
pp. 2507-2514 ◽  
Author(s):  
Q. Xue ◽  
Y.J. Ma ◽  
J.F. Lei ◽  
R. Yang ◽  
C. Wang
Keyword(s):  
Mechanical Properties ◽  
Phase Stability ◽  
Deformation Mechanisms ◽  
Β Phase

Change in anisotropy of mechanical properties with β-phase stability in high Zr-containing Ti-based alloys

2008 ◽  
Vol 480 (1-2) ◽  
pp. 167-174 ◽  
Author(s):  
Mohamed Abdel-Hady ◽  
Keita Hinoshita ◽  
Hiroki Fuwa ◽  
Yoshinori Murata ◽  
Masahiko Morinaga
Keyword(s):  
Mechanical Properties ◽  
Phase Stability ◽  
Β Phase ◽  
Anisotropy Of Mechanical Properties

Phase Stability and Mechanical Properties of Ti-Cr Based Alloys with Low Young’s Modulus

2010 ◽  
Vol 654-656 ◽  
pp. 2114-2117 ◽  
Author(s):  
Yonosuke Murayama ◽  
Shuichi Sasaki ◽  
Hisamichi Kimura ◽  
Akihiko Chiba
Keyword(s):  
Mechanical Properties ◽  
Young’S Modulus ◽  
Phase Stability ◽  
Deformation Mechanism ◽  
Young's Modulus ◽  
Deformation Behaviour ◽  
System Alloy ◽  
Β Phase ◽  
Ω Phase ◽  
Cr System

This work investigates the mechanical properties of Ti-Cr system alloys and focuses on the microstructure, the Young’s modulus, the deformation mechanism and the deformation behaviour observed in various alloy compositions. The addition of Al to the Ti-Cr system alloys greatly decreases the Young’s modulus. Addition of Al, Sn and Zr to various Ti-Cr alloys suppresses the athermal ω phase that forms during quenching from β field. A Ti-Cr system alloy with low Young’s modulus was obtained in suitable compositional combination of Cr, Zr and Sn or Al. The alloys with the composition where the quenched microstructure transits from martensite to meta-stable β phase show low Young’s modulus. In addition, the alloys show two-step yielding due to stress-induced transformation.

MODIFICATION OF PHASE STABILITY AND MECHANICAL PROPERTIES BY THE ADDITION OF O AND Fe INTO β-Ti ALLOYS

2009 ◽  
Vol 23 (06n07) ◽  
pp. 1559-1565 ◽  
Author(s):  
MOHAMED ABDEL-HADY ◽  
MASAHIKO MORINAGA
Keyword(s):  
Mechanical Properties ◽  
Cold Rolling ◽  
Phase Boundary ◽  
Phase Stability ◽  
Cold Working ◽  
Small Addition ◽  
Β Phase ◽  
Ti Alloys ◽  
Α Phase ◽  
Severe Change

Two alloy systems were designed across the β/β+α"–phase boundary. The small addition of O and Fe was found to be very effective in stabilizing the β–phase and modifying the mechanical properties. The cold rolling effect on the mechanical properties was different between the β+α" alloys and the single β–phase alloys. The presence of 20% Zr in the alloys was a reason behind the severe change of mechanical properties with β–phase stability and with cold working.

The influence of β phase stability on deformation mode and compressive mechanical properties of Ti–10V–3Fe–3Al alloy

2015 ◽  
Vol 84 ◽  
pp. 124-135 ◽  
Author(s):  
Mansur Ahmed ◽  
David Wexler ◽  
Gilberto Casillas ◽  
Orest M. Ivasishin ◽  
Elena V. Pereloma
Keyword(s):  
Mechanical Properties ◽  
Phase Stability ◽  
Deformation Mode ◽  
Β Phase

Composition Dependence of Phase Stability, Deformation Mechanisms, and Mechanical Properties of the CoCrFeMnNi High-Entropy Alloy System

JOM ◽  
2014 ◽  
Vol 66 (10) ◽  
pp. 1993-2001 ◽  
Author(s):  
C. C. Tasan ◽  
Y. Deng ◽  
K. G. Pradeep ◽  
M. J. Yao ◽  
H. Springer ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Stability ◽  
Composition Dependence ◽  
Alloy System ◽  
Deformation Mechanisms ◽  
High Entropy Alloy ◽  
High Entropy

Effects of Oxygen on Phase Stability and Mechanical Properties of Quenched Ti-Nb Alloys

2007 ◽  
Vol 124-126 ◽  
pp. 1377-1380
Author(s):  
Won Yong Kim ◽  
Han Sol Kim ◽  
Sung Hwan Lim
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Phase Stability ◽  
Martensite Transformation ◽  
Volume Fraction ◽  
Casting Process ◽  
Β Phase ◽  
Ω Phase ◽  
Nb Content ◽  
Content Of Oxygen

The effects of oxygen content on microstructures, elastic modulus and tensile properties of quenched Ti-Nb alloys were investigated in order to design a desirable Ti based alloy through casting process. From the microstructural and phase analysis, it is evidently revealed that the volume fraction of β phase increased with increasing content of oxygen, and the occurrence of intermediate ω phase was suppressed in metastable β Ti-Nb based alloys. Martensite transformation temperature decreased with increasing content of oxygen. Therefore, it is suggested that oxygen acts to stabilize β phase rather than α stabilizer in quenched state. Yield strength increased with increasing content of oxygen without a large consumption of ductility in metastable β Ti-Nb based alloys. The variation of mechanical property was explained by the phase stability, phase formation and microstructure in correlation with oxygen and Nb content.

scholarly journals Superelastic Behavior of Ti-Nb Alloys Obtained by the Laser Engineered Net Shaping (LENS) Technique

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2827 ◽  
Author(s):  
Damian Kalita ◽  
Łukasz Rogal ◽  
Piotr Bobrowski ◽  
Tomasz Durejko ◽  
Tomasz Czujko ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Deposition Process ◽  
Deformation Mechanisms ◽  
Recoverable Strain ◽  
Manufacturing Method ◽  
Laser Engineered Net Shaping ◽  
Β Phase ◽  
Nb Content ◽  
Superelastic Behavior ◽  
Net Shaping

The effect of Nb content on microstructure, mechanical properties and superelasticity was investigated for a series of Ti-xNb alloys, fabricated by the laser engineered net shaping method, using elemental Ti and Nb powders. The microstructure of as-deposited materials consisted of columnar β-phase grains, elongated in the built direction. However, due to the presence of undissolved Nb particles during the deposition process, an additional heat treatment was necessary. The observed changes in mechanical properties were explained in relation to the phase constituents and deformation mechanisms. Due to the elevated oxygen content in the investigated materials (2 at.%), the specific deformation mechanisms were observed at lower Nb content in comparison to the conventionally fabricated materials. This made it possible to conclude that oxygen increases the stability of the β phase in β–Ti alloys. For the first time, superelasticity was observed in Ti–Nb-based alloys fabricated by the additive manufacturing method. The highest recoverable strain of 3% was observed in Ti–19Nb alloy as a result of high elasticity and reverse martensitic transformation stress-induced during the loading.

scholarly journals Assessment of Mechanical, Chemical, and Biological Properties of Ti-Nb-Zr Alloy for Medical Applications

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 126
Author(s):  
Viktoria Hoppe ◽  
Patrycja Szymczyk-Ziółkowska ◽  
Małgorzata Rusińska ◽  
Bogdan Dybała ◽  
Dominik Poradowski ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Base Material ◽  
Biological Properties ◽  
Β Phase ◽  
Alloy Base ◽  
Static Tensile ◽  
Examination Methods ◽  
13Zr Alloy ◽  
Dental Applications

The purpose of this work is to obtain comprehensive reference data of the Ti-13Nb-13Zr alloy base material: its microstructure, mechanical, and physicochemical properties. In order to obtain extensive information on the tested materials, a number of examination methods were used, including SEM, XRD, and XPS to determine the phases occurring in the material, while mechanical properties were verified with static tensile, compression, and bending tests. Moreover, the alloy’s corrosion resistance in Ringer’s solution and the cytotoxicity were investigated using the MTT test. Studies have shown that this alloy has the structure α’, α, and β phases, indicating that parts of the β phase transformed to α’, which was confirmed by mechanical properties and the shape of fractures. Due to the good mechanical properties (E = 84.1 GPa), high corrosion resistance, as well as the lack of cytotoxicity on MC3T3 and NHDF cells, this alloy meets the requirements for medical implant materials. Ti-13Nb-13Zr alloy can be successfully used in implants, including bone tissue engineering products and dental applications.

Experimental and theoretical investigations on the phase stability and mechanical properties of Cr7Mn25Co9Ni23Cu36 high-entropy alloy

2021 ◽  
Vol 208 ◽  
pp. 116763
Author(s):  
Gang Qin ◽  
Ruirun Chen ◽  
Huahai Mao ◽  
Yan Yan ◽  
Xiaojie Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Stability ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Theoretical Investigations
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