scholarly journals Improvement in the microhardness and corrosion behaviour of Ti-14Mn biomedical alloy by cold working

2022 ◽  
Author(s):  
Mohammed Gouda ◽  
Salah Salman ◽  
Saad Ebied
Keyword(s):  
Corrosion Resistance ◽  
Cold Rolling ◽  
Corrosion Behaviour ◽  
Cold Deformation ◽  
Solution Treatment ◽  
Inert Atmosphere ◽  
Linear Increase ◽  
Β Phase ◽  
Before And After ◽  
Mechanical Properties And Corrosion

Abstract β-titanium alloys are essential in many applications, particularly biomedical applications. Ti-14Mn β-type alloy was produced using an electric arc furnace from raw alloying elements in an inert atmosphere. The alloy was homogenized at 1000 °C for 8 hr to ensure the complete composition distribution, followed by solution treatment at 900 °C, then quenched in ice water. The alloy was subjected to cold deformation via cold rolling with different ratios: 10, 30, and 90%. The phases change, microstructure, mechanical properties, and corrosion resistance of Ti-14Mn alloys were evaluated before and after cold rolling. The results showed that the β-phase is the only existed phase even after a high degree of deformation. The microstructure shows a combination of twinning and slipping deformation mechanisms in the deformed alloy. Microhardness values indicated a linear increase equal to 30% by increasing the ratio of cold deformation due to the strain hardening effect. The corrosion resistance of Ti-14Mn alloy was doubled after 90% cold rolling.

scholarly journals Effects of solution treatment and aging on the microstructure, mechanical properties, and corrosion resistance of a β type Ti–Ta–Hf–Zr alloy

RSC Advances ◽  
2017 ◽  
Vol 7 (20) ◽  
pp. 12309-12317 ◽  
Author(s):  
Jixing Lin ◽  
Sertan Ozan ◽  
Khurram Munir ◽  
Kun Wang ◽  
Xian Tong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Phase Transitions ◽  
Corrosion Behaviour ◽  
Solution Treatment ◽  
Mechanical Properties And Corrosion ◽  
Zr Alloy

A β type TTHZ alloy (Ti–40Ta–22Hf–11.7Zr) experienced various phase transitions during solution and aging treatments, and the different phases of the alloy significantly influenced its mechanical properties and corrosion behaviour.

scholarly journals Texture Evolution and Control of 2524 Aluminum Alloy and Its Effect on Fatigue Crack Propagation Behavior

2021 ◽  
Vol 11 (12) ◽  
pp. 5550
Author(s):  
Yuqiang Chen ◽  
Chuang Xiong ◽  
Wenhui Liu ◽  
Suping Pan ◽  
Yufeng Song ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Aluminum Alloy ◽  
Fatigue Crack ◽  
Cold Rolling ◽  
Texture Evolution ◽  
Cold Deformation ◽  
Solution Treatment ◽  
Second Phase ◽  
Fatigue Crack Growth Resistance ◽  
Volume Fractions

The influences of cold rolling and subsequent heat treatment on the microstructure evolution of 2524 alloy were investigated using an orientation distribution function (ODF) and electron back-scattered diffraction (EBSD). A preparation method of 2524-T3 aluminum alloy with a strong Brass texture was developed, and its effect on the fatigue properties of the alloy was investigated using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that with the increase in cold rolling deformation from 0% to 80%, the volume fractions of Brass, copper, and S textures in the 2524-T3 alloy also increase, especially in the case of Brass and S textures. However, the volume fractions of cube and Goss textures are reduced significantly, especially for cube textures, which are decreased by 57.4%. Reducing coarse second-phase particles (CSPs) is conducive to the formation of a strong deformation texture during cold rolling. A 10% deformation at each rolling pass, followed by a step annealing, helps the preservation of a Brass texture even after solution treatment at 500 °C for 0.5 h, while a large cold deformation followed by high-temperature annealing helps the formation of a strong cube texture. The Brass texture can enhance the strength while decreasing the fatigue crack growth resistance of this alloy.

Effect of Rolling Deformation on Corrosion Behaviour of AISI 304L in 3% NaCl Solution

2021 ◽  
Vol 406 ◽  
pp. 375-384
Author(s):  
Lazhar Yahia ◽  
Elamine Nouicer ◽  
Fatima Zohra Benlahreche
Keyword(s):  
Cold Rolling ◽  
Corrosion Behaviour ◽  
Cold Deformation ◽  
Austenitic Stainless Steels ◽  
Rolling Process ◽  
Mechanical Resistance ◽  
304L Stainless Steel ◽  
Aisi 304L ◽  
Pitting Potential ◽  
Rolling Deformation

It is well known that the mechanical resistance of austenitic stainless steels can be increased considerably by cold rolling process.¶ The cold rolling effect on corrosion resistance of AISI 304L stainless steel in 3% Sodium Chloride solution was investigated by potentiodynamic polarisation and by Scanning Electronic Microscopy (SEM). The pitting corrosion in this environment is related to the rate of cold deformation. The cold rolling induces important changes in the microstructure and involves phase transformation (γ→a'). The AISI 304L developes martensitic structure after 16% cold working. The potentiodynamic results show a moderate variation of the passivity zone, a remarkable decrease in the pitting potential and a free potential. The results also show an increase in the current density. However, it seems that the critical deformation rate appears to start at approximately 50% of the rolling deformation where the passivation current is minimal. After the polarisation tests, metastable pits are observed using SEM and the most probable initiation causes are discussed

scholarly journals Corrosion Resistance and Pitting Behaviour of Low-Carbon High-Mn Steels in Chloride Solution

2016 ◽  
Vol 61 (2) ◽  
pp. 825-832
Author(s):  
A. Grajcar ◽  
B. Grzegorczyk ◽  
A. Kozłowska
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Behaviour ◽  
Cold Deformation ◽  
Metallic Matrix ◽  
Corrosion Damage ◽  
Austenitic Steels ◽  
Low Carbon ◽  
Deformation Bands ◽  
Cold Worked ◽  
Corrosion Pits

Abstract Corrosion resistance of the X4MnSiAlNbTi27-4-2 and X6MnSiAlNbTi26-3-3 type austenitic steels, after hot deformation as well as after cold rolling, were evaluated in 3.5% NaCl solution using potentiodynamic polarization tests. A type of nonmetallic inclusions and their pitting corrosion behaviour were investigated. Additionally, the effect of cold deformation on the corrosion resistance of high-Mn steels was studied. The SEM micrographs revealed that corrosion damage formed in both investigated steels is characterized by various shapes and an irregular distribution at the metallic matrix, independently on the steel state (thermomechanically treated or cold worked). Corrosion pits are generated both in grain interiors, grain boundaries and along the deformation bands. Moreover, corrosion damage is stronger in cold deformed steels in comparison to the thermomechanically treated specimens. EDS analysis revealed that corrosion pits preferentially nucleated on MnS and AlN inclusions or complex oxysulphides. The morphology of corrosion damage in 3.5% NaCl supports the data registered in potentiodynamic tests.

scholarly journals Developing Improved Mechanical Property and Corrosion Resistance of Mg-9Li Alloy via Solid-Solution Treatment

Metals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 920
Author(s):  
Wang ◽  
Song ◽  
Li ◽  
Klu ◽  
Qiao ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Solid Solution ◽  
Corrosion Resistance ◽  
Surface Film ◽  
Solution Treatment ◽  
Uniform Corrosion ◽  
Water Mixture ◽  
Alloy Matrix ◽  
Β Phase ◽  
Ice Water

Cast Mg-9Li alloy was successfully solid-solution (SS) treated via heating at 575 °C for 4.5 h and rapidly quenched with ice-water mixture. The mechanical property and corrosion resistance of the SS alloy were simultaneously improved. Rapid bcc/hcp phase transition of the alloy occurred during the quenching process, creating the newly precipitated needle-like fine α-Mg phase, uniformly distributed in the β-Li phase matrix. Dramatic grain refinement and uniform distribution of the α-Mg phase, as well as the massively increased α/β phase interfaces, are factors leading to the improved mechanical property of the SS alloy. Meanwhile, due to the modified duplex-phase structure, the SS alloy has a uniform corrosion-resistant surface film on the β-Li phase, which completely covers the entire alloy surface and efficiently protects the substrate. In addition, the SS alloy has fewer difference in the elements concentration and corrosion activity of the duplex phases, which reduces the pitting sensitivity and improves the corrosion resistance of the alloy matrix. The findings in this binary Mg-Li alloy can also serve as a benchmark for other more practical and complicated Mg-Li alloys.

Effect of solution treatment on the corrosion behaviour of aluminium alloy AA7150: Optimisation for corrosion resistance

2011 ◽  
Vol 53 (1) ◽  
pp. 217-225 ◽  
Author(s):  
D.K. Xu ◽  
N. Birbilis ◽  
D. Lashansky ◽  
P.A. Rometsch ◽  
B.C. Muddle
Keyword(s):  
Corrosion Resistance ◽  
Aluminium Alloy ◽  
Corrosion Behaviour ◽  
Solution Treatment

Effect of Strontium on Mechanical Properties and Corrosion Resistance of AZ91D

2007 ◽  
Vol 546-549 ◽  
pp. 567-570 ◽  
Author(s):  
Yu Fan ◽  
Guo Hua Wu ◽  
Chun Quan Zhai
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Corrosion Resistance ◽  
Corrosion Rate ◽  
Az91d Alloy ◽  
Nacl Solution ◽  
Strengthening Phase ◽  
Β Phase ◽  
Mg17al12 Phase ◽  
Mechanical Properties And Corrosion

With adding 2% strontium in AZ91D, the ultimate tensile strength and the elongation increased by 10.3% and 55.3%, respectively. This is mainly caused by the refinement of the β phase and the formation of Al4Sr strengthening phase. Furthermore, with adding 2% strontium in AZ91D alloy, the weight loss corrosion rate in 5wt.% NaCl solution decreases to 0.048 mg·cm-2·d-1, which was 33.8 % of the AZ91D corrosion rate. Therefore, the mechanical properties and corrosion resistance of AZ91D could be improved by the addition of 2% strontium, which is due to the refinement of Mg17Al12 phase and the formation of Al4Sr phase.

Investigation on mechanical, corrosion resistance and antibacterial properties of Cu-bearing 2205 duplex stainless steel by solution treatment

RSC Advances ◽  
2016 ◽  
Vol 6 (114) ◽  
pp. 112738-112747 ◽  
Author(s):  
Jinlong Zhao ◽  
Chunguang Yang ◽  
Dawei Zhang ◽  
Ying Zhao ◽  
M. Saleem Khan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Duplex Stainless Steel ◽  
Antibacterial Properties ◽  
Solution Treatment ◽  
2205 Duplex Stainless Steel ◽  
Antibacterial Performance ◽  
Solution Treated ◽  
Mechanical Properties And Corrosion

Solution treated 2205-Cu DSS with strong antibacterial performance against M. salsuginis showed appropriate mechanical properties and corrosion resistance.

AN APPROXIMATION TO DETERMINE CORROSION AND MECHANICAL BEHAVIOR OF TI-BASED ALLOYS

2020 ◽  
pp. 2150001
Author(s):  
YESIM YILMAZ ◽  
HULYA DEMIROREN
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Corrosion Resistance ◽  
High Corrosion Resistance ◽  
Commercially Pure ◽  
Grade 5 ◽  
Heat Treated ◽  
Before And After ◽  
Mechanical Properties And Corrosion ◽  
Cp Ti

Titanium and its alloys used in biomaterial applications are preferrably the cause of high-corrosion resistance properties in addition to having good mechanical properties. Commercially pure Ti (CP-Ti) (Grade 2), Ti6Al4V (Grade 5) and Ti6Al4V-ELI (Grade 23) samples are used as biomaterials exposed to 750°C and 1060°C for 1[Formula: see text]h. The samples were cooled in air after heat treatment at 750°C, the other samples were cooled in water after heat treatment at 1060°C. The free-heat treatment samples are as producted. Microstructures of heat-treated samples and non-made samples by comparison were evaluated before and after corrosion process microstructures and tensile strengths. Test solution is 0.5[Formula: see text]mol H2SO[Formula: see text][Formula: see text]mol HCl mixture. The corrosion resistance of the titanium samples was evaluated. Microstructure images were monitorized on optical and SEM microscopes. In this paper, the effect of heat treatment was determined on the microstructure, mechanical properties and corrosion resistances of the material. As a result, heat treatment is useful on corrosion resistance of alloyed samples.

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