کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7208964 | 1469113 | 2014 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of swaging on Young׳s modulus of β Ti-33.6Nb-4Sn alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی پزشکی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effect of swaging on the Young's modulus of β Ti-33.6Nb-4Sn rods was investigated by X-ray diffraction, thermography, microstructural observations, deformation simulator analysis and cyclic tensile deformation. Stress-induced αⳠmartensite was stabilized by swaging, dependent on the diameter reduction rate during swaging. Thermography and deformation simulator analysis revealed that swaged rods were adiabatically heated, and consequently, stress-induced αⳠunderwent reverse transformation. Young's modulus, which was measured by the slope of the initial portion of the stress-strain curve, decreased from 56 GPa in the hot-forged/quenched rod to 44 GPa in the rapidly swaged rod with a high reduction rate and to 45 GPa in the gradually swaged rod with a low reduction rate. The tangent modulus, which was measured by the slope of the tangent to any point on the stress-strain curve, decreased with strain even in the linear range of the stress-strain curve of the hot-forged/quenched rod and the rapidly swaged rod, while the tangent modulus remained unchanged for the gradually swaged rod. It was found that Young's moduli in swaged β Ti-33.6Nb-4Sn rods were affected by stabilized αⳠmartensite. Low Young's modulus of 45 GPa and high strength over 800 MPa were obtained when the reverse transformation by adiabatic heating was suppressed and the stress-induced αⳠwas sufficiently stabilized by gradual swaging to a 75% reduction in cross section area.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Mechanical Behavior of Biomedical Materials - Volume 32, April 2014, Pages 310-320
Journal: Journal of the Mechanical Behavior of Biomedical Materials - Volume 32, April 2014, Pages 310-320
نویسندگان
Shuji Hanada, Naoya Masahashi, Taek Kyun Jung, Masahiro Miyake, Yutaka S. Sato, Hiroyuki Kokawa,