Search results

Jayakumar2 1Microscopy and Thermophysical Properties Division, Physical Metallurgy Group 2Metallurgy and Materials Group Indira Gandhi Centre for Atomic Research, Kalpakkam–603102 asraju@igcar.gov.in (corresponding author) Keywords: Fe-Cr alloy; Phase Stability, Thermodynamics; Magnetism, Calorimetry Abstract.
Introduction The Fe-Cr binary is an important archetypal system, upon which the design of many advanced engineering materials, such as austenitic, ferritic, and duplex grade stainless steels is conceived [1-2].
Chen, An improved thermodynamics modeling of the Fe–Cr system down to zero Kelvin coupled with key experiments, CALPHAD, 35 (2011) 355–366
Dudarev, Cluster expansion models for Fe–Cr alloys the prototype materials for power plant, Comp.

Surface Galling Mechanism Analysis of Rotary Shouldered Thread Connection Fangpo Li1,2,a* 1CNPC Tubular Goods Research Institute, Shaanxi Xi’an 710077, China 2State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Shaanxi Xi’an 710077, China alifangpo@163.com Keywords: Surface damage, Galling, M&B test, Rotary shouldered thread connection.
Introduction As an important tool for petroleum and gas drilling engineering, drill pip is connected with rotary shouldered thread connection (RSTC), which are manufactured according to API Spec 7-2:2008 [1].
Test Methods and Materials The test specimens were 168.3mm×82.6mm NC50 and 184.2mm×108.0mm HET57 RSTC.
The material of RSTC was 37CrMnMo.
The testing results showed that 60%~80% yield torque couldn’t resulted in serious damage or galling failure under the condition that thread parameters, geometry and material properties of RSTC and thread compound met the requirement of relevant standards.

Effect of Ferrous Ion on the Corrosion Behaviour of 410 Stainless Steel in Wet H2S Environment Jie Zhoua, Pengpeng Baib, Tianqi Wangc and Shuqi Zhengd* State Key Laboratory of Heavy Oil Processing and Department of Materials Science and Engineering, China University of Petroleum, Beijing 102249, China aJeffrey222@126.com, bcup2011216059@163.com, cwtq0719@163.com, dzhengsq09@163.com Keywords: H2S, corrosion, Martensitic stainless steel.
Experimental Procedure Material and sample preparation. 410SS was chosen as the experimental material.
The microstructure of the material was typical martensite, as shown in Fig. 1, and the chemical composition (wt%) is as follows: C, 0.14; Si, 0.30; Mn, 0.20; P, 0.02; S, 0.01; Cr, 12.70; Ni, 0.20; Cu, 0.10 and Fe balance.
The optical microstructure of the test material was determined by a optical microscope.

Effect of Compound Fluxes on A-TIG Welding Joint Depth of Cu-Cr-Zr Alloy Wenhong Jiang a, Randong Yu b and Sheng Lu c* School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003 Jiangsu, China ajwh19870701@163.com, b358781203@qq.com, c*lusheng119@yahoo.com.cn Keywords: Cu-Cr-Zr copper alloy, A-TIG welding, Formula of uniform designs, Flux.
Introduction Owning to the high strength, good electrical conductivity and thermal conductivity , high temperature to resist soften and good abrasive resistance, Cu-Cr-Zr copper alloy is often used as an ideal electric material[1,2].
Experimental The experimental material is Cu-Cr-Zr alloy and the content of Cr is 0.5%, the content of Zr is 0.6%, others are copper.
In this research, oxidizing materials have a great impact on penetration depth.
Acknowledgment The present work was supported by a project funded by the Priority Academic Program Development （PAPD）of Jiangsu Higher Education Institutions (SZB2011-6),State Administration of Foreign Experts Affairs (T110511045),Graduate Innovation Program of Jiangsu Province (CXLX11_0290) and the key laboratory of advanced welding technology of Jiangsu Province (JSAWT-11- 08).

Alloy elements added in Fe-6.5wt% Si silicon steel and their effect on ductility and magnetic properties Zhaoyang Cheng1,a, Jing Liu1,b , Wensi Chen1,c, Guodong Sun2, Xifeng Lin1, Yuan Zhu1, Shang Zhu1, Jiachen Zhu1, Zhidong Xiang1 1School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081 China, 2School of Mechanical and Materials Engineering, Jiujiang College, Jiujiang 332005, China azhaoyangcheng911@163.com, bwkdliu@126.com, Csiizhu1314@yeah.net Keywords: Fe-6.5wt% Si silicon steel; alloy elements; ductility; magnetic properties Abstract: Fe-6.5wt%Si silicon steel has excellent soft magnetic properties, but its ductility in room temperature is near zero.
The key technology to obtain the Fe-6.5wt%Si silicon steel by the traditional hot rolling-warm rolling-cold rolling process is to find a way to reduce the brittleness at room temperature and improve the ductility of this steel.
Alloying is commonly used to improve the plastic property and plastic processing property of the materials.

Fractionation on raw materials is an essential operation for almost all processes acquiring other products [2].
Experimental Material The lavender (Lavandula angustifolia Mill.) flowers used were delivered from the company JUVAMED Ltd.
Soxhlet extraction Dried materials (approximately 7.5 g) were placed in a soxhlet apparatus.
In the end, they are the key to creating the demanded properties of extractives compounds.
Adamović, Investigation of cultivated lavender (Lavandula officinalis L.) extraction and its extracts, Chemical Industry and Chemical Engineering Quarterly 20 (2014) 71-86.

Introduction Switched-mode power-conversion (SMPC) circuits such as converters and inverters have been widely applied to power-electronics (PE) applications, such as consumer electronics, industrial systems, and motor-control systems because of their high conversion efficiency.[1] The semiconductor switches and diodes are the key devices for the SMPC circuits.
Stephani, Materials Science Forum Vols. 527-529 (2006) p. 1255
Cressler, in: SiC Power Materials, Device and Applications, chapter 10.
Pantelides, et. al., Materials Science Forum Vols 527-529 (2006) p.935
Kitabatake, et. al., Microelectronic Engineering 83 (2006) p. 135

Introduction With the development of ecological engineering, a new ecological water purification technology becomes a hot issue.
Experimental materials Study Area and Materials.
The main material of floating island is polystyrene with a high density of 18g/cm3.
The material of carrier model of floating island is polystyrene foam with length of 50cm, width of 30cm, thickness of 10cm.
Results and Analysis According to multivariable and double factors variance analysis, the effect of different velocity of flow and fixation methods to changes of lateral, longitudinal and vertical floating displacement of floating island is significant (all P<0.000) under α=5% significance level, which represent the changes of flow is the key factors affecting the stability of floating island and the difference between the stability of different fixation methods is remarkable.

Filice1,c 1Department of Mechanical Engineering, University of Calabria, 87036 Rende, Italy af.gagliardi@unical.it, bg.ambrogio@unical.it, cl.filice@unical.it Keywords: Extrusion, Porthole Die, Aluminium Alloy.
The material flow is split by the bridges and forced through the portholes.
Subsequently, the different material parts flow inside a welding chamber where, due to the temperature and pressure combination, rejoin.
This is a key-phase for the manufacturing soundness; in fact, the welding line deeply influences the quality of the extruded parts and best characteristics can be reached just guaranteeing correct process conditions.
Davis, in: Metal Handbook, edited by Davis & Associats - The Materials Information Society, Material Park.OH, USA (1998)

Based on the protection of water pack polysaccharide processing technology and its optimization ZHU Yun-long1,a,*,Wang Qianqian,Yang Yuan,Zhu Jingjing 1Food Science and Engineering College of Yangzhou University, Yangzhou 225127, Jiangsu, China aEmail:yl1962z@163.com Key words: water pack; Processing method; Water pack polysaccharide; retention Abstract: Purpose: For health water pack polysaccharide easy loss occurred during processing, establish a high retention rate of the processing method.
This paper choose the boiling, steaming, baking, frying four heating mode, slice thickness, heating temperature and heating time as parameters, study the influence of the heating medium on water pack polysaccharide, compare the retention rate, designed to provide the basis for selection of water pack products processing method. 1 materials and methods 1.1 materials and reagents Purple circle water pack, bought in taizhou farmers market; Soybean oil, Shanghai yi hai kerry food co., LTD.
Guangdong beautiful life; Infrared thermometer, DT - 880, shenzhen huasheng chang machinery industrial co., LTD.; Electric oven, SM - 503 + 3 s, wuxi new wheat machinery co., LTD. 1.3 methods 1.3.1 pretreatment Process:  fresh water pack → cleaning → peeling → slicing → bagging (50g/bag) → vacuum Handling considerations: (1) material choose the water pack complete hypertrophy, peeling, bud, take its edible bulb part; (2) washing with distilled water injector, then use clean cloth to wipe the surface of the water pack moisture
Fried: 1000 ml soybean oil heating, temperature stability, the water pack slice into the pan, Fried, drain oil and cooling, for measurement. 1.3.3 index determination Water pack polysaccharide phenol - sulfuric acid colorimetric method used for determination[6-9]. (1) Preparation of sample solution: water pack sample drying, after 60 mesh, water pack powder; Take this powder 1.0 g said, add distilled water as extraction temperature 70 ℃, leaching time 3 h, material liquid than 1:15 extract (g/mL); Then extract strike the suction filter, rotary evaporator decompression enrichment to 5 ml; Then add 4 times the volume of anhydrous ethanol (make the alcohol content of 80%), alcohol sink in at 4 ℃ refrigerator overnight (let stand for 12 h), centrifugal, the precipitation after dissolving and constant volume with distilled water to 100 ml; Learn 1 ml from the fluid of the constant volume precision put in 50 ml volumetric flask, add the capacity to scale the distilled water, shake well, for