کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5456625 | 1514664 | 2017 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The relationship of dislocation and vacancy cluster with yield strength in magnetic annealed UFG 1050 aluminum alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The relationship of dislocation and vacancy cluster with yield strength in magnetic annealed UFG 1050 aluminum alloy The relationship of dislocation and vacancy cluster with yield strength in magnetic annealed UFG 1050 aluminum alloy](/preview/png/5456625.png)
چکیده انگلیسی
The evolutions of tensile properties and microstructures of ultrafine grained (UFG) 1050 aluminum alloy after annealing at 90-210 °C for 4 h without and with 12 T high magnetic field were investigated by tensile test, electron back scattering diffraction pattern (EBSD), transmission electron microscopy (TEM) and positron annihilation lifetime spectroscopy (PALS). When annealing temperature increases from 90 °C to 150 °C, the yield strength (YS) of UFG 1050 aluminum alloy increases, it is because that the increase in the density of vacancy clusters due to the activated monovacancies and the high angle boundaries (HABs) having more stable structures, both of them can act as effective barriers to dislocation motion during tensile deformation. When annealing at 210 °C, the YS of UFG 1050 aluminum alloy deceases, it is because that the decrease in the vacancy clusters density due to the thermally activated the vacancy clusters annihilating at sinks and the dislocation density decreases. The YS of magnetic annealed samples are lower at 90 °C and 150 °C due to the lower density of dislocations and vacancy clusters. The difference of YS between samples annealed without and with magnetic field disappears at 210 °C due to the sharply reduced strain hardening stage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 679, 2 January 2017, Pages 417-427
Journal: Materials Science and Engineering: A - Volume 679, 2 January 2017, Pages 417-427
نویسندگان
Yiheng Cao, Lizi He, Xingzhong Cao, Peng Zhang, Baoyi Wang, Yizhou Zhou, Ping Wang, Jianzhong Cui,