H. Mostaan
Department of Materials and Metallurgical Engineering, Faculty of Engineering, Arak University, arak, Iran
[ 1 ] - Micro Laser Welding of AISI 430 Ferritic Stainless Steel: Mechanical Properties, Magnetic Characterization and Texture Evolution
In the present work, a high power Nd:YAG laser has been employed to weld AISI 430 ferritic stainless steel thin sheets. Optical microscopy was used to study the microstructural evolutions during laser welding. Tensile test and microhardness measurement were employed in order to investigate the mechanical behaviors of welds. Also, vibrational sample magnetometry was used for characterizing magne...
[ 2 ] - Tribological Properties of B4C-Ni Cermet Coating Produced by HVOF Process on the Surface of 4130 Steel
In this research, B4C-Ni cermet coating was sprayed on the surface of 4130 steel from B4C and Ni feed-stockpowders using high velocity oxy-fuel (HVOF) method. In order to characterize the tribological behavior of thecoating, ball on disk wear tests were done at the ambient temperature and under the loads of 1, 3 and 5 N.Phase analysis of the coating after spraying was studied ...
[ 3 ] - تأثیر فلز پرکننده بر خواص اتصال غیرمشابه فولاد 4130 به فولاد زنگ‌نزن 316 L
In this research, dissimilar welding between 4130 low alloy steel and austenitic stainless steel 316L has been investigated using Gas Tungsten Arc Welding (GTAW). Two types of filler metals, including ERNiCr-3 and ER309L, were used for this purpose. Moreover, the joint microstructures including the weld metals, heat affected zones and interfaces were characterized by optical and Scanning Electr...
[ 4 ] - تولید و مشخصه یابی ترکیب بین فلزی نانوکریستال Ni2AlSi از طریق فرایند آلیاژسازی مکانیکی
در این تحقیق، ترکیب بین‌فلزی Ni2AlSi توسط فرایند آلیاژسازی مکانیکی تولید و مکانیزم تشکیل آن در حین آلیاژسازی با ترکیب بین فلزی NiAl مقایسه شد. بدین منظور، مخلوط‌های پودری Ni50Al50 و Ni50Al25Si25 به مدت زمان 30 ساعت مورد عملیات آلیاژسازی مکانیکی قرار گرفتند. تغییرات فازی، ریزساختاری و مورفولوژیکی مخلوط‌های پودری در حین آلیاژسازی مکانیکی توسط پراش پرتو ایکس و میکروسکوپ الکترونی روبشی مورد بررسی ق...
[ 5 ] - Effect of Temperature and Time on the Joint Properties of AISI420 Steel to SAF2507 Steel Produced by Transient Liquid Phase Process
In this research, the effect of temperature and time on the properties of AISI420/SAF2507 dissimilar joint produced by transient liquid phase bonding process was investigated. A BNi-2 interlayer with 25 μm thickness was inserted between two dissimilar steel samples. The bonding process was performed at 1050 oC and 1100 oC for different bonding times. The microstructures of the joints were studi...
نویسندگان همکار