کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1603452 1515979 2013 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tribotesting system for hardmetal mechanical characterization
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Tribotesting system for hardmetal mechanical characterization
چکیده انگلیسی


• System approach was applied to the assessment of a material abrasive wear by hard particles.
• Relationships between comminution, material abrasion and material fracture were applied for hardmetals mechanical characterization.
• Quantitative indicators for abradant and hardmetal mechanical characterization were established.
• Tribotester, experimental procedure, and the results presentation were shown and verified.

Performance of a material in a tribomechanical system can only be determined by a carefully designed simulation in which mechanical elements undergo processes similar to those in a complex engineering environment. In this paper a simple and reliable integrated testing method, in which conjoin actions involving fracture and abrasion of hardmetals together with abradant comminution, is carefully monitored and analysed. The presented system approach to tribotesting enables the mechanical characterization of hardmetals in attrition contact with granular minerals which takes place in e.g. mineral processing or in drilling action. The results from this testing show that by using one apparatus and test specimen shape it is possible to obtain a reliable rating of hardmetals according to both criteria: their fracture toughness as well as their resistance to abrasion in rubbing contact with the abradant. The integrated testing method required a theoretical or empirical model which describes the relationship between fracture toughness, other mechanical properties and the test's fracture indicator. For the range of materials tested, the best correlation received was for the empirical model for the removal of brittle material by lateral cracking.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 41, November 2013, Pages 470–482
نویسندگان
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