کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1639587 1517043 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Relationship between boundary misorientation angle and true strain during high temperature deformation of 7050 aluminum alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Relationship between boundary misorientation angle and true strain during high temperature deformation of 7050 aluminum alloy
چکیده انگلیسی

Tensile tests of solid solution treated 7050 aluminum alloy were conducted to different strain degrees (0.1, 0.4, 0.6 and failure) at 460 °C with the strain rate of 1.0 × 10−4–1.0 × 10−1s−1. The boundary misorientation angle evolution during hot deformation of the 7050 aluminum alloy was studied by EBSD technique and the fracture surfaces were observed using SEM. A linear relationship between the increase in the average boundary misorientation angle and the true strain at different strain rates is assumed when aluminum alloy is deformed at 460 °C. The increasing rate of average boundary misorientation angle is 15.1°, 15.7° and −0.75° corresponding to the strain rate of 1.0 × 10−4, 1.0 × 10−2 and 0.1 s−1, respectively. The main softening mechanism is continuous dynamic recrystallization when the strain rates are 1.0 × 10−4 and 1.0 × 10−2 s−1, and it is dynamic recovery when strain rate is 0.1 s−1.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 18, Issue 4, August 2008, Pages 795-798