Effect of the deformation on nitrocarburizing microstructure of the cold deformed Ti-6Al-4V alloy

Sun, Huan-zheng; Zheng, Jun-Yuan; Yang, Song; Jiang, Chi; Fu, Yong Qing

doi:10.1016/j.surfcoat.2019.01.079

Cited by 10 publications

(3 citation statements)

References 20 publications

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“…Based on the research in the past few years [24][25][26], we figured that low-temperature (≤550 • C) plasma-nitriding treatment could be used as the preferred surface modification process for titanium alloy, and cold-rolling deformation can promote plasma nitriding. In this paper, a treatment process of cold-rolling deformation and low-temperature nitriding at 450 • C, causing simultaneous recrystallizations, was designed to perform compound modification treatment on TA2 industrial pure titanium alloy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Deformation on the Microstructure of Cold-Rolled TA2 Alloy after Low-Temperature Nitriding

et al. 2021

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In order to improve the low hardness and poor wear resistance of TA2, this paper proposes a composite process of cold-rolling and low-temperature plasma nitriding with recrystallization. This composite modification process can effectively achieve the dual goals of modifying the matrix structure and surface of TA2 alloy simultaneously. The cold-rolling experimental results indicate that when the deformation rate increases, the small-sized grains in the sample increase significantly, and the grain orientation changes from TD (transverse direction) to RD (rolling direction) and then to TD. The nitriding experimental results indicate that the {0001} basal surface texture deflected from the TD direction to the RD direction, {10-10} cylindrical texture components gradually increased, and the special orientation phenomenon of cylindrical and conical texture disappeared, it can be seen that an increase in the deformation rate promotes recrystallization. The XRD test results indicate that after low-temperature nitriding, metastable nitriding phase TiN0.26 is formed on the surface of TA2. The SEM morphology of the cross-section shows that a relatively special nitrided zone is formed, and mechanical performance test results indicate the wear resistance and hardness of the alloy increased.

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Section: Introductionmentioning

confidence: 99%

Effect of Deformation on the Microstructure of Cold-Rolled TA2 Alloy after Low-Temperature Nitriding

et al. 2021

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“…Chemical heat treatment is a process in which the material is placed in a medium containing a particular active element for heating and heat preservation, and a concentration gradient is formed on the surface to make the active ingredient enter the surface of the material to form a layer [ 164 , 165 , 166 , 167 ]. Chemical heat treatment can effectively improve the thermal fatigue resistance, wear resistance, and corrosion resistance of materials, and chemical heat treatment has a low cost, wide application, and mature technology [ 168 , 169 , 170 , 171 , 172 , 173 , 174 , 175 ]. After chemical heat treatment, the surface composition of the material will change [ 176 , 177 ].…”

Section: Surface Modification Methodsmentioning

confidence: 99%

Tribocorrosion and Surface Protection Technology of Titanium Alloys: A Review

Li,

Zhou,

2023

Materials

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Titanium alloy has the advantages of high specific strength, good corrosion resistance, and biocompatibility and is widely used in marine equipment, biomedicine, aerospace, and other fields. However, the application of titanium alloy in special working conditions shows some shortcomings, such as low hardness and poor wear resistance, which seriously affect the long life and safe and reliable service of the structural parts. Tribocorrosion has been one of the research hotspots in the field of tribology in recent years, and it is one of the essential factors affecting the application of passivated metal in corrosive environments. In this work, the characteristics of the marine and human environments and their critical tribological problems are analyzed, and the research connotation of tribocorrosion of titanium alloy is expounded. The research status of surface protection technology for titanium alloy in marine and biological environments is reviewed, and the development direction and trends in surface engineering of titanium alloy are prospected.

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“…Termokimyasal bir yüzey işlemi olan Nitrokarbürizasyon (NK) mühendislik malzemelerinin aşınma, korozyon ve yorulma hasarlarını önlemek için tercih edilen bir ısıl işlem tekniğidir [6][7][8]. Karbon ve azot atomlarının eşzamanlı difüzyonu temeline dayanan NK işlemi, malzeme yüzeyinde 10-20μm kalınlığında beyaz bir tabaka oluşturur.…”

Section: Gi̇ri̇ş (Introduction)unclassified

The Effect of Oxidation Process After Nitrocarburization on Tribological Properties of AISI 4140 Steel

Kaplan

Yildirim²,

Aksöz

2020

Politeknik Dergisi

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Bu çalışmada, karbon ve azot atomlarının eşzamanlı difüzyonu temeline dayanan nitrokarbürizasyon sonrası oksidasyon işlemlerinin AISI 4140 çeliğinin mikroyapı, mikrosertlik ve tribolojik özelliklerine etkileri incelenmiştir. Nitrokarbürizasyon işleminin birçok avantajı olmasına rağmen özellikle malzemelerin korozyon ve tribolojik özelliklerini iyileştirilmek için işlem sonrası farklı ısıl işlem tekniklerine ihtiyaç duyulmaktadır. Nitrokarbürizasyon + oksidasyon işlemleri sonucunda malzeme yüzeyinin en dışında yaklaşık 5µm kalınlığında oksit tabakası, hemen altında nitrür ve karbürlerden oluşan yaklaşık 5µm kalınlığında bileşik tabaka ve karbürce zengin difüzyon bölgesi olmak üzere 3 farklı bölge oluşmuştur. Ana fazdan daha sert difüzyon bölgesi, nitrokarbürizasyon ve oksidasyon katmanları sayesinde malzemenin tüm yüzeyinde aşınma davranışları iyileştirilmiştir. Böylece aşınma direnci ile birlikte aynı zamanda sürtünme katsayısı da iyileştirilmiştir.

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Effect of the deformation on nitrocarburizing microstructure of the cold deformed Ti-6Al-4V alloy

Cited by 10 publications

References 20 publications

Effect of Deformation on the Microstructure of Cold-Rolled TA2 Alloy after Low-Temperature Nitriding

Effect of Deformation on the Microstructure of Cold-Rolled TA2 Alloy after Low-Temperature Nitriding

Tribocorrosion and Surface Protection Technology of Titanium Alloys: A Review

The Effect of Oxidation Process After Nitrocarburization on Tribological Properties of AISI 4140 Steel

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