... (by avoiding continuous, or semi-continuous grain boundary networks and avoiding the most damaging form of delta phase - acicular platelets). oilfield chemistry H2S management Susceptibility nickel alloy Production Chemistry Corrosion Management resistance texas 77084 hydraulic fracturing hac...

... that these materials were heavily sensitized with embrittling phases present at the austenite grain boundaries. Improper annealing processes at the manufacturing plant likely caused the sensitization of the microstructure. Downstream of the reformers, UNS S30403 austenitic SS tube ends of the boiler feed water heat...

... intergranular in the 120 and 140 ksi heats. The grain boundary is mostly free from phase precipitates in the 150 ksi heat but there is a significant amount of phase precipitates in the 120 ksi and 140 ksi heats including continuous coverage. Also, the and matrix precipitates in the 150 ksi heat...

... ABSTRACT The purpose of this research was to investigate the influence of microstructure of Armco iron on hydrogen trapping by analyzing the trapping ability of grain boundaries and dislocations. Hydrogen traps were introduced into the material by systematically subjecting it to various...

... Downstream Oil & Gas coker furnace tube texas 77084 permission Houston cross-section Microstructure grain boundary Sulfidation Corrosion of Alloy 800HT Coker Furnace Tubes Lokesh Choudhary Phillips 66 Highways 60 & 123 Bartlesville, OK 74003 USA Gary Welch Phillips 66 Highways 60 & 123...

... ni-base alloy grain boundary nuclear power systems-water reactor specimen pwr primary water environmental degradation Influence of intergranular oxidation on stress corrosion cracking of Ni-base alloys exposed to simulated PWR primary water Yun Soo Lim Korea Atomic Energy Research Institute...

... alloys INTRODUCTION Precipitation Hardened (PH) Ni base alloys are known to be sensitive to HISC, reported failures of components could be attributed to Hydrogen Embrittlement (HE)1-3. For the UNS(1)07718 the relationship between grain boundary precipitation and HE was highlighted in 20024. This factor...

... that are not representative of the bulk microstructure. In no case shall any individual grain be surrounded with acicular phases. 2- The microstructures shall be free from continuous networks of secondary phases along grain boundaries, except for individual, isolated grains or isolated fields of view...

... analysis was performed on each heat, at different levels, involving SEM and TEM examinations at high magnification on etched samples, to reveal the phases present at grain boundaries. Methodologies were developed to quantify the grain boundary coverage (length of precipitates at grain boundary divided...

... ABSTRACT Nickel alloy UNS N10276 is nominally a single-phase, corrosion-resistant alloy used in a wide variety of applications, particularly in the chemical process industries. Rich in alloying elements like Mo and Cr that promote corrosion resistance, the grain boundary precipitation of mu...

... in informed selection of UNS N10276 microstructures for specific applications. Here, grain boundary corrosion susceptibility in the context of grain boundary types is the focus. With the aid of electron backscatter diffraction microscopy (EBSD), grain maps containing spatial orientation information have been...

... microstructure of the crack-tip region of a failed tube was examined using SEM, TEM and EBSD to clarify the relaxation crack mechanism. The current findings suggest that dislocation enhanced M23C6 precipitation near grain boundary promoted oxidation near grain boundary, and then a crack propagated along...

... Management quenched-in chromium nitride permission ferrite grain Microstructure texas 77084 DSS manuscript grain boundary Effects of nitrides precipitation in duplex stainless steel ABSTRACT Duplex Stainless Steels (DSS) are characterized by a dual-phase ferritic-austenitic microstructure...

... variation and hot shortness. Hot cracking can occur during casting and tin sweat on cast surfaces and Sn-rich intermetallics. Hot and cold cracking in other processing circumstances are also possible. It is possible to get discontinuous precipitation-induced grain boundary segregation or internal chemical...

... Corrosion Inhibition Production Chemistry alloy 152 Artificial Intelligence H2S management metals & mining Upstream Oil & Gas weld oilfield chemistry Corrosion Management primary water environment oxidation specimen Publication Division alloy 182 grain boundary...

... chemistry Corrosion Management precipitate Houston manuscript Microstructure fracture surface grain boundary Production Chemistry Susceptibility permission microstructural particularity hydrogen charging hydrogen Effect of Microstructural Particularities on the Corrosion Resistance of Nickel...

... Inhibition oilfield chemistry well integrity chloride solution alloy grain boundary permission NaCl specimen manuscript texas 77084 nacl 0 Houston carbide ABSTRACT Pitting corrosion susceptibility of UNS N06600, UNS N06690 and UNS N08800 was studied in pure 1 M NaCl with and without Na...

... alloy Micrograph grain boundary texas 77084 reverse scan Houston Microstructure Publication Division dl-epr test KSCN reactivation peak Corrosion Management optical micrograph permission sensitization manuscript Optimization of the double loop potentiokinetic reactivation method (DL...

... toughness of two nickel containing steels as an alternative material to manufacture low temperature toughness improved CO 2 transporting pipelines. Microstructure, effective grain size (EGS), density of high angle grain boundaries (HAGB) and fracture toughness were evaluated. The results indicated...

... & Defense propagation kinetic specimen continuous immersion grain boundary tensile test procedure corrosion defect defect depth intergranular corrosion corrosion damage Pipeline Corrosion well integrity exposure condition corrosion test mechanical property defect Characterization...