FORMATION OF NANOSTRUCTURED NiAl COATING ON CARBON STEEL SUBSTRATE BY USING MECHANICAL ALLOYING
Publish place: 1st International and 6th Joint Conference of Iranian Society of Metallurgical Engineers and the scientific community of Casting
Publish Year: 1391
نوع سند: مقاله کنفرانسی
زبان: English
View: 1,269
This Paper With 12 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
IMES06_171
تاریخ نمایه سازی: 8 بهمن 1391
Abstract:
Nanostructured NiAl intermetallics coatings were generated on carbon steel by using mechanical alloying in ambient temperature and pressure. Ni and Al powders were mixed with the composition ofNi-50 at% Al. The process involved powder particles trapped between the ball and cold welding atsurface. Coatings were examined using X-ray diffraction and scanning electron microscopy (SEM). The results showed that the phase transmutation during process and subsequent heat treatment are strongly affiliate on mechanically alloyed time. After 480 min heat treatment of mechanically alloyed sample, only NiAl peaks were viewed. Ball encounters and failures consecutive reduced the coarse grains of the coating to the nanoscale. The size of nanocrystalline grains in the NiAl coating ranged between 28nm to 130nm. The creation of the coatings was studied at milling intervals between 60 and 600 min. The average thickness and hardness of the surface layers at 480 min, were 470 μm and 930 HV, respectively.
Keywords:
Authors
M. Mohammadnezhad
Department of Materials Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Iran
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :