Improving the fatigue behavior of dental implants through processing commercial purity titanium by equal-channel angular pressing

被引：51
作者：
Figueiredo, Roberto B. [1 ]
Barbosa, Eduardo R. de C. [2 ]
Zhao, Xicheng [3 ]
Yang, Xirong [3 ]
Liu, Xiaoyan [3 ]
Cetlin, Paulo R. [4 ]
Langdon, Terence G. [5 ,6 ,7 ]
机构：
[1] Univ Fed Minas Gerais, Dept Mat Engn & Civil Construct, BR-31270901 Belo Horizonte, MG, Brazil
[2] Dent Res Ctr Sao Leopoldo Mand, BR-13045755 Campinas, SP, Brazil
[3] Xian Univ Architecture & Technol, Sch Met Engn, Xian 710055, Peoples R China
[4] Univ Fed Minas Gerais, Dept Mech Engn, BR-31270901 Belo Horizonte, MG, Brazil
[5] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA
[6] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA
[7] Univ Southampton, Fac Engn & Environm, Mat Res Grp, Southampton SO17 1BJ, Hants, England
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 619卷
基金：
欧洲研究理事会; 高等学校博士学科点专项科研基金;
关键词：
Commercial purity titanium; Dental implants; Equal-channel angular pressing; Fatigue; Severe plastic deformation; ULTRAFINE-GRAINED MATERIALS; HIGH-PRESSURE TORSION; PURE TITANIUM; WEAR PROPERTIES; MICROSTRUCTURE; ECAP; DEFORMATION; EVOLUTION;
D O I：
10.1016/j.msea.2014.09.099
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An investigation was conducted to evaluate the feasibility of using commercial purity (CP) titanium of grade 1 for dental implants after processing by equal-channel angular pressing (ECAP). The material was processed by ECAP for 4 passes at room temperature. Dental implants were machined from the unprocessed material and the material processed by ECAP and their mechanical properties were evaluated in tensile and compression testing and in fatigue using the conditions specified in the ISO 14801 standard for dental implants. The results show processing by ECAP increases the yield stress and the ultimate tensile stress but reduces the strain hardening rate and hence the overall elongation to failure. Although processing by ECAP increases the fatigue life using cyclic bending loads, a comparison with published data suggests the fatigue behavior CP Ti of grade 1 is slightly less satisfactory than for commercial implants fabricated from higher grade titanium alloys. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：312 / 318
页数：7
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