کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1635593 | 1516944 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization of discontinuous yielding phenomenon in isothermal compression of TC8 titanium alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Characterization of discontinuous yielding phenomenon in isothermal compression of TC8 titanium alloy Characterization of discontinuous yielding phenomenon in isothermal compression of TC8 titanium alloy](/preview/png/1635593.png)
چکیده انگلیسی
The discontinuous yielding phenomenon (DYP) during high temperature deformation was investigated based on the isothermal compression of TC8 titanium alloy. The DYP of TC8 titanium alloy was characterized by quantifying the yield drop of the DYP (ÎÏUL) and ending strain of flow oscillation (ÉOSC) based on the flow stress-strain curves, and then the effect of deformation parameters on the ÎÏUL and ÉOSC values was analyzed. The results show that the ÎÏUL and ÉOSC values increase with the increase of strain rate. The effect of deformation temperature on the ÎÏUL value depends on the strain rate. Finally, the transmission electron microscope (TEM) observation shows the evidence for the dynamic theory, which ascribes the DYP to the generation of mobile dislocation at the grain boundary. Meanwhile, the optical microscope (OM) observation shows that both the primary α grain and β grain become smaller with the increase of strain, which well interprets the effect of deformation parameters on the ÎÏUL and ÉOSC values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 26, Issue 6, June 2016, Pages 1583-1588
Journal: Transactions of Nonferrous Metals Society of China - Volume 26, Issue 6, June 2016, Pages 1583-1588
نویسندگان
Ke WANG, Miao-quan LI,