This research study investigates the influence of sampling direction on microstructure and mechanical properties dissimilar joints formed by friction stir welding (FSW). The specimens were cut in two directions: perpendicular (transverse) parallel (longitudinal) to FSW joint. tests conducted included X-ray diffraction (XRD), macrostructure, microstructure, tensile, microhardness, fractography a...

OBJECTIVES To review the history, theory and current applications of Weibull analyses sufficient to make informed decisions regarding practical use of the analysis in dental material strength testing. DATA References are made to examples in the engineering and dental literature, but this paper also includes illustrative analyses of Weibull plots, fractographic interpretations, and Weibull dis...

The influence of hydrogen on the mechanical behavior a quenched and tempered 42CrMo4 steel has been evaluated by means high internal pressure fracture tests carried out precharged notched cylindrical specimens. specimens were in 1 M H2SO4 + 0.25 g/l As2O3 solution for 3 h with 1.2 mA/cm2. Hydraulic performed at different loading rates. Hydrogen embrittlement resistance increased grain size refi...

In this work, the effect of ultrasonic nanocrystal surface modification (UNSM) treatment at room and high temperatures (RT HT) on high-frequency fatigue behavior Inconel 718 alloy fabricated by laser metal deposition (LMD) process was experimentally investigated. UNSM RT HT modified a morphology produced nanostructured layer with thickness approximately 120 140 µm, respectively. The roughness u...

Gallium arsenide (GaAs) is used in the most demanding semiconductor applications, including medical, aerospace and communication industries, where significant mechanical stresses are experienced during operation. Mechanical from thermal expansion loading can result fracture of GaAs crystals, a leading cause device failure. Unfortunately, underlying mechanisms III-V semiconductors currently not ...

In this work, the inhibition effect of a non-ionic gemini surfactant, named bis(2-((2-palmitoamidoethyl)amino)ethyl)1H-imidazole4,5-dicarboxylate, on stress corrosion cracking (SCC) behavior supermartensitic stainless steel (SMSS) was studied in sour environment. The slow strain rate tests (SSRT) results and fractographic analysis revealed that inhibitor able to inhibit SCC process using concen...

An investigation into the mechanical properties of K55, N80, and P110 steels commonly used for casing drilling was carried out together with microstructural fractographic analysis. The results show that steel consisted almost fully tempered martensite exhibited a synergy combination static tensile, dynamic impact, fatigue crack propagation among three steels, possessing higher limit deeper tole...