کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9796464 | 1514947 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Constitutive analysis of the high-temperature deformation mechanisms of Ti-6Al-4V and Ti-6.85Al-1.6V alloys
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Constitutive analysis of the high-temperature deformation mechanisms of Ti-6Al-4V and Ti-6.85Al-1.6V alloys Constitutive analysis of the high-temperature deformation mechanisms of Ti-6Al-4V and Ti-6.85Al-1.6V alloys](/preview/png/9796464.png)
چکیده انگلیسی
The high-temperature deformation mechanisms of a near-α titanium alloy (Ti-6.85Al-1.6V) and an α + β titanium alloy (Ti-6Al-4V) were deduced within the framework of inelastic-deformation theory. For this purpose, load-relaxation tests were conducted on the two alloys at temperatures ranging from 750 to 900 °C. The stress versus strain rate curves of both alloys were well fit with inelastic-deformation equations which consisted of grain-matrix deformation (GMD) and grain-boundary sliding (GBS). The constitutive analysis revealed that the grain-boundary sliding resistance is higher in the near-α alloy than in the two-phase α + β alloy due to the difficulty in relaxing stress concentrations at the triple-junction regions in the near-α alloy. In addition, the internal-strength parameter (Ï*) of the near-α alloy was much higher than that for the α + β alloy, thus implying that dislocation emission/slip transfer at α/α boundaries is more difficult than at α/β boundaries.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 394, Issues 1â2, 15 March 2005, Pages 366-375
Journal: Materials Science and Engineering: A - Volume 394, Issues 1â2, 15 March 2005, Pages 366-375
نویسندگان
Jeoung Han Kim, S.L. Semiatin, Chong Soo Lee,