کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
769386 897386 2009 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Strength and grinding residual stresses of Y-TZP with duplex microstructures
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Strength and grinding residual stresses of Y-TZP with duplex microstructures
چکیده انگلیسی

The influence of grinding surface stresses on the strength and apparent fracture toughness of Y-TZP doped with 2.8% molar Yttria has been analysed. It is shown that by means of heat treatments of 2.8Y-TZP at 1650 °C for different times, a duplex cubic-tetragonal microstructure can be produced, which is more transformable and tougher than the starting 2.8Y-TZP. The effect of grinding is studied in samples heat-treated under different conditions and it is shown that compression residual stresses are induced in a surface layer. These are estimated by X-ray diffraction and by measuring the length of indentation cracks in ground and in annealed specimens. The effect of residual stresses on strength and fracture toughness is discussed in terms of a simple model based on a uniform compression residual stress in a surface layer.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Failure Analysis - Volume 16, Issue 8, December 2009, Pages 2586–2597
نویسندگان
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