A Comparison of Warm and Combined Warm and Low‐Temperature Processing Routes for the Equal‐Channel Angular Pressing of Pure Titanium

Bulutsuz, Aslı Günay; Chromiński, Witold; Huang, Yi; Král, Pétr; Yurci, Mehmet Emin; Lewandowska, M.; Langdon, Terence G.

doi:10.1002/adem.201900698

Cited by 5 publications

(4 citation statements)

References 33 publications

(55 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It can be seen that the temperature has a certain influence on the ECAP processing technology. Bulutsuz et al obtained the average grain size of pure Ti after two passes of the composite temperature, which were 1.5 μm and 1.7 μm, respectively [76]. A al.…”

Section: Grain Size From 01-1 μMmentioning

confidence: 99%

“…The same conclusion was found in pure Ti[74] and pure Al[75]. Figure11shows the microstructures under different route treatments.Bulutsuz et al obtained the average grain size of pure Ti after two passes of ECAP at the composite temperature, which were 1.5 µm and 1.7 µm, respectively[76]. Attarilar et al found that the average grain size of pure Ti reached 1.09 µm after four passes of ECAP at 400 • C [77], Ebrahimi and Attarilar measured an average grain size below 0.5 µm after four passes of ECAP at 450 • C[78].…”

mentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances in the Equal Channel Angular Pressing of Metallic Materials

et al. 2022

View full text Add to dashboard Cite

Applications of a metallic material highly depend on its mechanical properties, which greatly depend on the material’s grain sizes. Reducing grain sizes by severe plastic deformation is one of the efficient approaches to enhance the mechanical properties of a metallic material. In this paper, severe plastic deformation of equal channel angular pressing (ECAP) will be reviewed to illustrate its effects on the grain refinement of some common metallic materials such as titanium alloys, aluminum alloys, and magnesium alloys. In the ECAP process, the materials can be processed severely and repeatedly in a designed ECAP mold to accumulate a large amount of plastic strain. Ultrafine grains with diameters of submicron meters or even nanometers can be achieved through severe plastic deformation of the ECAP. In detail, this paper will give state-of-the-art details about the influences of ECAP processing parameters such as passes, temperature, and routes on the evolution of the microstructure of metallic materials. The evolution of grain sizes, grain boundaries, and phases of different metallic materials during the ECAP process are also analyzed. Besides, the plastic deformation mechanism during the ECAP process is discussed from the perspectives of dislocation slipping and twinning.

show abstract

Section: Grain Size From 01-1 μMmentioning

confidence: 99%

mentioning

confidence: 99%

Recent Advances in the Equal Channel Angular Pressing of Metallic Materials

et al. 2022

View full text Add to dashboard Cite

show abstract

“…[19,20] Multistage SPD is used to obtain ultrafine-grained (UFG) or even nanostructured Ti products. Equal channel angular pressing (ECAP), [21] high-pressure torsion (HPT), [22,23] and hydrostatic extrusion (HE) [24,25] are commonly used methods to refine grains in CP-Ti. Recent years have seen great progress in those deformation techniques as well as in the characterization of UFG/nano Ti products, especially for biomedical applications (Figure 1).…”

Section: Grain Refinement To the Nanoscale-an Alternative To Ti6al4vmentioning

confidence: 99%

Nanostructured Bulk Titanium with Enhanced Properties—Strategies and Prospects for Dental Applications

Sotniczuk

Garbacz

2021

Adv Eng Mater

View full text Add to dashboard Cite

Society is aging fast. The percentage of people aged above 65 years is forecast to rise from 12.4% (in 2000) to 23% by 2100. [1] The figures for 2030 for Europe and the United States are %20% and 30% respectively. [2] At present, almost 23% of US citizens over 65 are completely edentulous, creating great demand for dental replacements. [3] According to the compound annual growth rate (CAGR) forecast, the global dental market is expected to exceed $8 billion by the end of 2024, up from $4.46 billion in 2016. [1] Moreover, with rising life expectancy, modern implants have to serve much longer without requiring revision surgery. This is challenging, especially in the case of elderly people, who tend to suffer diseases that increase the risk of implant rejection. [2] Thus, advanced healthcare requires constant development in the design and fabrication of dental materials. Currently, commercially pure titanium (CP-Ti) is a leading metallic material in the global dental replacements market. [4] This is mainly due to its biocompatibility and high resistance to corrosion in body fluids. Those properties are governed by the presence of a passive layer on Ti surface, created by its strong tendency to oxidize. [5] Nanostructuring by large plastic deformation techniques is a promising approach to altering Ti properties that are essential for dental applications. [1,[6][7][8][9][10] While clinical trials have confirmed the successful application of dental implants fabricated from nanocrystalline Ti, [4,9] works are still ongoing to develop strategies aimed at enhancing biological response and antibacterial properties without impacting mechanical properties. [11][12][13][14] In this Review, we describe recent approaches taken to modify the properties of nanocrystalline Ti for biomedical applications. Our study focuses on the following aspects: (i) improving biomedical nano Ti properties through bulk and surface modifications, and (ii) the effect of microstructural changes induced by processing of nano Ti on the results of modifications. This analysis is prefaced by a brief description of the effect of nanostructure on Ti mechanical and functional properties.

show abstract

“…Malzemelere uygulanan Aşırı Plastik Deformasyon (APD) sonrasında yapıda artan gerinim miktarı ile yapıdaki iri tanecik boyutu ultra ince taneye hatta nano yapıya dönüşmektedir. Yüksek Basınç Altıda Burma (YBAB), Eş Kanal Açılı Presleme (EKAP) literatürde kullanılan APD tekniklerinden bir kısmıdır [8][9][10][11]. APD teknikleri tane yapısını inceltirken malzeme özelliklerini iyileştirmektedir.…”

Section: Introductionunclassified

Biyoçözünür İmplant Uygulamaları İçin Saf Çinko Tozlarından İnce Taneli Yapıların İmalatı ve Çözünme Davranışının Karakterizasyonu

Bulutsuz

2021

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

View full text Add to dashboard Cite

Yeni nesil biyoçözünür implantlara olan ilgi gün geçtikçe artmaktadır. Fe, Zn ve Mg yaygın olarak tercih edilen metalik biyoçözünür malzemelerdir. Biyomedikal ve korozyon özelliklerindeki avantajları sayesinde Zn son dönemde ön plana çıkmıştır. Çalışma kapsamında Saf Zn tozlarına Yüksek Basınç Altında Burma (YBAB) uygulanarak ince taneli yapılar elde edilmiştir. 1, 5 ve 10 rotasyondan sonra elde edilen numunelerin, mikro yapıları, mekanik özellikleri ve çözünme davranışları karakterize edilmiştir. Mikro yapı incelemeleri için optik mikroskop, mekanik özellik incelemeleri için sertlik ve çekme testi uygulanmıştır. Çözünme davranışının tespiti için ise vücut sıcaklığında (37 °C) 15 gün boyunca gözlemler gerçekleştirilmiştir. Çözünme testlerinden sonra oluşan yüzey topografyası taramalı elektron mikroskobu (SEM) ile incelenmiştir. Elde edilen sonuçlara göre YBAB işlemi mikro yapıyı, mekanik özellikleri ve çözünme davranışını etkilemiştir. Sertlik 5 rotasyonda en yüksek değere ulaşmış, sonrasında tane toparlanması sebebi ile sertlik değeri düşmüştür. Bunun yanı sıra mekanik dayanım artmaya devam etmiştir. Çözünme davranışı en düşük 10. Rotasyonda elde edilirken bu değerin 5. Rotasyon ile oldukça yakın olduğu gözlemlenmiştir. Bu çalışma ile ilk defa toz Zn başlangıç numunelerinden yola çıkılarak YBAB uygulanmış karakterize edilmiş ve fosfat tamponu içerisinde çözünme davranışı gözlemlenmiştir.

show abstract

A Comparison of Warm and Combined Warm and Low‐Temperature Processing Routes for the Equal‐Channel Angular Pressing of Pure Titanium

Cited by 5 publications

References 33 publications

Recent Advances in the Equal Channel Angular Pressing of Metallic Materials

Recent Advances in the Equal Channel Angular Pressing of Metallic Materials

Nanostructured Bulk Titanium with Enhanced Properties—Strategies and Prospects for Dental Applications

Biyoçözünür İmplant Uygulamaları İçin Saf Çinko Tozlarından İnce Taneli Yapıların İmalatı ve Çözünme Davranışının Karakterizasyonu

Contact Info

Product

Resources

About