کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10615145 | 987222 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanical properties of Ti-Nb biomedical shape memory alloys containing Ge or Ga
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Mechanical properties of Ti-Nb biomedical shape memory alloys containing Ge or Ga Mechanical properties of Ti-Nb biomedical shape memory alloys containing Ge or Ga](/preview/png/10615145.png)
چکیده انگلیسی
Mechanical properties of Ti-24 mol% Nb-based shape memory alloys (SMA) containing 3 mol% Ga or Ge were characterized in this paper as a part of our systematic work for the development of β-Ti based biomedical shape memory alloys. The alloys, called TiNbGa and TiNbGe, were produced by severe cold-rolling followed by a solution treatment at 1273 K for 1.8 ks. The apparent phase was β (bcc) at RT in both the alloys. It was revealed by X-ray diffraction pole figure analysis that a {112}βã110ãβ recrystallization texture was well developed in TiNbGa. However, a {001}βã110ãβ deformation texture still remained in TiNbGe even after the solution treatment. Martensite transformation temperatures were significantly lowered by the addition of Ge, compared to Ga and Al additions. TEM-EDX observation revealed that (Ti, Nb)5Ge3 particles are formed in TiNbGe regardless of the solution treatment. The (Ti, Nb)5Ge3 particles were judged to be an ineffective strengthener, because significant hardening was not recognized in the flow-stress of TiNbGe. TiNbGa exhibited a large shape recovery of about 2% above RT in the strain-temperature curves during thermal cycles under external stress. The TiNbGe alloy exhibited superelasticity of 3.5% at RT.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 25, Issue 3, May 2005, Pages 426-432
Journal: Materials Science and Engineering: C - Volume 25, Issue 3, May 2005, Pages 426-432
نویسندگان
Tomonari Inamura, Yusuke Fukui, Hideki Hosoda, Kenji Wakashima, Shuichi Miyazaki,