کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5013643 1462950 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cavitation erosion and erosion-corrosion resistance of austenitic stainless steel by plasma transferred arc welding
ترجمه فارسی عنوان
فرسایش حفره و مقاومت فرسایش خوردگی فولاد ضد زنگ آستنیتی توسط جوشکاری قوس الکتریکی قابل انتقال
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
41WC-36Ni7.5CrSiB (Colmonoy75) and NiCrBSiW (Colmonoy88) alloy coatings were synthesized on 316 L stainless steel by plasma transferred arc welding, aiming at improving cavitation erosion and erosion-corrosion resistance. The microstructure, chemical composition, phase constituents and microhardness were determined by using SEM, EDS, XRD and microhardness tester. The cavitation erosion and erosion-corrosion experiments of the coatings were investigated using an ultrasonic vibrator and a jet erosion testing measurement in 3.5 wt% NaCl solution, respectively. Experimental results showed that the coatings with few pores, cracks or other defects could be obtained. The microstructure of the Colmonoy75 and Colmonoy88 coatings exhibited cellular dendrite and irregular blocky phases. The two coatings were composed of γ-Ni solid solution and WC particles, while the formation mechanism of WC was different. In the cavitation erosion and erosion-corrosion tests, the cumulative volume losses of the two coatings were much lower than that of the substrate. Colmonoy88 coating exhibited a better resistance to cavitation erosion and erosion-corrosion than Colmonoy75 coating. The cavitation erosion and erosion-corrosion resistance of the Colmonoy75 coating could reach about 3 times and 8 times that of 316 L substrate, while the Colmonoy88 coating could reach about 12 times and 31 times that of 316 L substrate, respectively. The improvment in the cavitation erosion and erosion-corrosion resistance for Colmonoy88 coating could be attributed to the fact that the in situ synthesized WC particles increased the cavitation erosion and erosion-corrosion resistance by providing an anchoring effect on the solid solutions to hinder the nucleation and propagation of cracks.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Failure Analysis - Volume 76, June 2017, Pages 115-124
نویسندگان
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