Published in Materials
A dissimilar autogenous laser welded joint of AISI 430F (X12CrMoS17) martensitic stainless steel and AISI 304 (X5CrNi18-10) austenitic stainless steel was manufactured. The welded joint was examined by non-destructive visual testing and destructive testing by macro- and microscopic examination and hardness measurements. With reference to the ISO 13...
Published in Cells
A high fat Western-style diet leads to hepatic steatosis that can progress to steatohepatitis and ultimately cirrhosis or liver cancer. The mechanism that leads to the development of steatosis upon nutritional overload is complex and only partially understood. Using click chemistry-based metabolic tracing and microscopy, we study the interaction be...
Published in Materials
Given the drawbacks of the conventional welding methods in joining the battery case and tab in the lithium-ion battery, the laser welding technique using the metal tube has been introduced for the weld. The metal tube is supposed to contribute a positive effect including protection to the outside structure by blocking the injection of the spatters,...
Published in Acta Materialia Transylvanica
The geometry and microstructure of the seam can be influenced by changing technological parameters such as laser power, welding speed, focus distance and shielding gas. In this research we examine the effect of laser power and focus distance on the quality of the breaking torque value while the welding speed and the shielding gas is unchanged. From...
Published in Materials
The effect of welding speed on microstructure, mechanical properties, and corrosion properties of laser-assisted welded joints of a twinning-induced plasticity (TWIP) steel was investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM), electron backscattered diffraction (EBSD) analysis, electrochemical test, and micro-area s...
Published in Materials
The research described in this article presents a new contactless method of introducing mechanical vibrations into the base material during CO2 laser welding of low-carbon steel. The experimental procedure boiled down to subjecting a P235GH steel pipe with a 60 mm diameter, 3.2 mm wall thickness and 500 mm length to acoustic signals with a resonant...
Lasersko varjenje polimerov v zadnjem času močno prodira v industrijo, čeprav nam nekateri vplivi na uspešno varjenje še niso dovolj dobro znani ali pa so celo neznani. Diplomska naloga zajema raziskavo dejavnikov, dodatkov in lastnosti, ki vplivajo na prepuščanje in absorpcijo laserske svetlobe. Izkazalo se je, da je vplivnih veličin več in da je ...
Zaključna naloga obravnava preverjanje vpliva zaščitnega plina pri laserskem varjenju avstenitnega nerjavnega jekla. Glavni razlog je pocenitev proizvodnega procesa z uporabo cenejšega zaščitnega plina dušika namesto argona. Kakovost izdelanih zvarov smo testirali vizualno, s tlačno-strižnim preizkusom in z metalografsko analizo. Ugotovili smo, da ...
Published in Materials
A new test method named “Trapezoidal hot” cracking test was developed to evaluate solidification cracking susceptibility of stainless steel during laser welding. The new test method was used to obtain the solidification cracking directly, and the solidification cracking susceptibility could be evaluated by the solidification cracking rate, defined ...
Published in Materials
This study presents results of experimental tests on quality of dissimilar welded joints between 316L austenitic and 2304 lean duplex stainless steels, welded without ceramic backing. Fiber laser welded butt joints at a thickness of 8 mm were subjected to non-destructive testing (visual and penetrant), destructive testing (static tensile test, bend...
