کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8044389 | 1518918 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on microstructure and impact toughness of TC4 titanium alloy diffusion bonding joint
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
TC4 titanium alloy was diffusion bonded under small axial pressure of 0.5â¯MPa to restrain the deformation. The sample surfaces, prior to bonding, were finely polished to Ra 0.3â¯Î¼m. The bonding temperatures were used as 860, 890 and 920â¯Â°C with holding time of 1â¯h. The joint microstructure was examined. Tensile test and Charpy impact test were conducted to evaluate the joint strength and toughness. Two parts of the 860â¯Â°C bonded sample were then held in 920â¯Â°C for 90â¯min and 180â¯min, respectively. The results show that the 920â¯Â°C joint with high bonding ratio (â¼98%) fractured at the base metal during tensile test showing excellent strength of the joint. However, the impact toughness was 14.99â¯J/cm2 that is much lower than 27.3â¯J/cm2 of the base metal. The heat treated 860â¯Â°C samples had 100% bonding ratio and impact toughness of 15.81 and 20.02â¯J/cm2 for the 90 and 180â¯min sample. The microstructure analysis indicates that the joint toughness was affected by the void defects remained and the interface grain boundary migration at the bonding interface.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 152, June 2018, Pages 272-277
Journal: Vacuum - Volume 152, June 2018, Pages 272-277
نویسندگان
Hao Zhang, Jinglong Li, Pingyi Ma, Jiangtao Xiong, Fusheng Zhang,