[PDF] Top 20 Effect of shielding gas on the properties and microstructure of melted steel surface using a TIG torch

... the shielding gas used; as observed, a wider fusion zone was obtained when using nitrogen as the shielding gas, where the value of voltage was the highest ...when using helium as ... See full document

... and Steel Institute (AISI) type 304 is the foundation of 300 series austenitic stainless steels is by far the oldest, largest and most important group in the stainless steel range ...[4]. Gas ... See full document

... its effect on size and microstructure of fusion zone then, on mechanical and corrosion properties of duplex stainless steel welded ...made using carbon dioxide laser with a maximum ... See full document

... the shielding gas parameters have a significant effect on the thermal properties of the solidified ...lower shielding gas flow rate, and a shielding gas composition ... See full document

... helium gas mixture. The microstructure is that of a silicon cast iron and the effect of higher heat input and mixed gas environment is to dissolve more SiC, resulting in larger dendrites in ... See full document

... the shielding gas cylinders and regulators housing the two types of gases ...shows TIG welding torch which is fixed with it using a clamp at a particular angle so that during welding a ... See full document

... carbon steel. Various ways have been established to create excellent properties as traditional low-strength steel did not meet the requirements of modern manufacturing and production ...The ... See full document

... unprocessed surface on the fatigue strength in conjunction with the effect of subsequent post treatments ...stainless steel and titanum, aluminum alloys, AlSi10Mg is especially a very commonly used ... See full document

... Applications surface will produce high temperature and shear stress to lead to the sharply change of surface microstructure, such as nanograin layer [4] [5] [6] [7], dy- namic recrystallization [8], ... See full document

... Using steel slag and two types of (soft and hard) iron slags, ten samples were ...range using narrow transmission geometry. It has been observed that shielding effective- ness of a sample is ... See full document

... fine steel fragments that had scattered away from the ...the TIG-HFSW joints, the grains of Al6061-T6 at the retreating side were finer than those of the FSW joints in the HAZ and ...small steel ... See full document

... Two commercial hard facing electrodes were applied onto flux coated SAE 1025 steel plates according to the manufacturer’s directions. The nominal chemical composition of SAE 1025 steel can be seen in Tables ... See full document

... the steel should have 100% martensite to attain maximum yield strength, but it is very brittle too and thus, as quenched steels are used for very few engineering ...the properties of quenched steel ... See full document

... the effect of welding on different regions of welded steel, it was reported that a hardness testing is the usual approach in delineating the properties of these various zones, but the information ... See full document

... activated TIG flux-welding eliminates the need of edge preparations in the ...conventional TIG welding, there are less number of welding passes required to complete the joint which further improves the ... See full document

... affect microstructure and mechanical properties based on earlier research ...stainless steel structure and mechanical ...main properties: porosity and ... See full document

... temperature of the steel tube is given in Table 1. A 150 kg ingot was prepared by vacuum melting followed by hot forging to produce a bar with a dimension of º65 © 1000 mm. After turning, the bar was pierced at ... See full document

... Sample preparation is usually necessary with a micro hardness test in order to provide a small enough speci- men that can fit into the tester. Additionally, the sample preparation will need to make the specimen’s ... See full document

... In the present work, crystallographic texture of TIG weldments was investigated using EBSD and neutron diffraction. The specimens were in the shape of cuboids machined from austenitic stainless welds. ... See full document

... mechanical properties of tempered sample showed that the tensile strength, yield strength, toughness, hardness, percentage reduction and percentage elongation were ...mechanical properties of tempered ... See full document