کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9795864 | 1514936 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Elevated temperature tensile behaviour of a Cu-4.5Ti alloy
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Elevated temperature tensile behaviour of a Cu-4.5Ti alloy Elevated temperature tensile behaviour of a Cu-4.5Ti alloy](/preview/png/9795864.png)
چکیده انگلیسی
The high temperature tensile properties of a Cu-4.5Ti alloy have been investigated in the temperature range from room temperature (RT) to 550 °C in solution treated (ST) and peak-aged (PA) conditions. Yield strength (YS) and tensile strength (TS) in solution treated condition were found to be independent of test temperature up to 350 °C followed by a marginal increase at 450 °C and decreased, thereafter up to 550 °C. In situ age hardening during testing at 450 °C resulting in the precipitation of ordered, metastable and coherent Cu4Ti, βⲠphase is attributed to the increase in strength. Coarsening of βⲠprecipitate particles at 450 °C and precipitation of equilibrium phase β at 550 °C decrease the strengths. In the peak-aged condition, the YS and TS were found to be constant up to 350 °C, beyond which they decreased with increasing test temperature. The decrease in strengths beyond 350 °C in the peak-aged alloy is attributed to the coarsening of βⲠprecipitate particles, as well as precipitation of equilibrium phase β at 550 °C. High temperature tensile properties of Cu-4.5Ti are superior to those of Cu-Be alloy (C17200). Transmission electron microscope (TEM) analysis of the alloy confirms the presence of metastable and coherent Cu4Ti, βⲠprecipitate when tested at 450 °C and both Cu4Ti, βⲠand equilibrium precipitate Cu3Ti, β at the test temperature of 550 °C in solution treated as well as peak-aged conditions. Ductile mode of fracture was observed in both solution treated and peak-aged conditions of the alloy tested at RT as well as at elevated temperatures, i.e. 350, 450 and 550 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 406, Issues 1â2, 15 October 2005, Pages 186-194
Journal: Materials Science and Engineering: A - Volume 406, Issues 1â2, 15 October 2005, Pages 186-194
نویسندگان
S. Nagarjuna, M. Srinivas,