کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1450778 988745 2007 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reducing grain boundary, dislocation line and vacancy formation energies by solute segregation: II. Experimental evidence and consequences
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Reducing grain boundary, dislocation line and vacancy formation energies by solute segregation: II. Experimental evidence and consequences
چکیده انگلیسی

The extended version of the Gibbs adsorption isotherm including dislocations and vacancies is used to analyse existing experimental data. Thus phenomena and models like solid solution softening, hydrogen-enhanced local plasticity, brittleness of hydrides and superabundant vacancies could be interpreted on the basis of thermodynamics as caused by changing the defect energy by solute segregation; like in Gibbs’ original work, surface and grain boundary energies are reduced by excess solute. In addition, the analysis of experimental results addresses the question whether zero or negative defect energies are feasible and how this will affect materials behaviour.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 55, Issue 15, September 2007, Pages 5139–5148
نویسندگان
,