Wear Resistance of Sintered Composite Hardfacings under Different Abrasive Wear Conditions

• Main Authors: Taavi SIMSON, Priit KULU, Andrei SURŽENKOV, Riho TARBE, Dmitri GOLJANDIN, Marek TARRASTE, Mart VILJUS, Rainer TRAKSMAA
• Format: Article
• Language: English
• Published: Kaunas University of Technology 2017-08-01
• Series: Medžiagotyra
• Subjects: hardfacing; powder metallurgy; abrasive wear; impact erosion
• Online Access: http://matsc.ktu.lt/index.php/MatSc/article/view/17640
• ISSN: 1392-1320; 2029-7289

<p>The article focuses on vacuum liquid phase sintered (PM) composite hardfacings and their behaviour under different abrasive wear conditions. Hardfacings studied contained 30–50 vol % fine, coarse or multimodal (fine and coarse) hardmetal reinforcement. For wear resistance studies, we used the Abrasive Rubber Wheel Wear (ARWW) test as a three-body abrasive wear test, the Abrasive Wheel Wear (AWW) test as a two-body abrasive wear test and the Abrasive-Impact Erosion wear (AIEW) test as an abrasive-erosive wear test. Tested materials were compared to Hardox 400 steel and CDP112 wear plate (Castolin Eutectic® Ltd.). It was found that under three-body abrasion conditions (ARWW test) hardfacings with high content of spehrical coarse reinforcement are suitable; their wear resistance is about two times higher than that of unreinforced hardfacings. Under two-body abrasive wear (AWW test), hardfacings with a high content of coarse reinforcement are recommended; their wear resistance is up to eight times higher than that of unreinforced hardfacings from the figures and graphs mentioned in the text. Under abrasive-erosive wear (AIEW test), unreinforced ductile materials are recommended; they have two to three times higher wear resistance than composite hardfacings reinforced with fine or multimodal reinforcement.</p><p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.23.3.16323">http://dx.doi.org/10.5755/j01.ms.23.3.16323</a></p>