Sigma phase embrittlement - Study guides, Class notes & Summaries

API 571 Practice Exam #2 Questions And Correct Answers, 100% Verified Ammonium bisulfide corrosion is an aggressive corrosion occurring in hydroprocessing reactor effluent streams and in units handling alkaline sour water. Several major failures have occurred in hydroprocessing reactor effluent systems due to localized corrosion. The least resistant material to this type of corrosion is: a) aluminum alloys b) carbon steel c) 300 Series SS d) duplex SS B 5.1.1.2.2 a) For materials susce...

API 571 Practice Exam #2 Questions And Correct Answers, 100% Verified Ammonium bisulfide corrosion is an aggressive corrosion occurring in hydroprocessing reactor effluent streams and in units handling alkaline sour water. Several major failures have occurred in hydroprocessing reactor effluent systems due to localized corrosion. The least resistant material to this type of corrosion is: a) aluminum alloys b) carbon steel c) 300 Series SS d) duplex SS B 5.1.1.2.2 a) For materials susce...

API 571 Practice Exam #2 Questions And Correct Answers, 100% Verified Ammonium bisulfide corrosion is an aggressive corrosion occurring in hydroprocessing reactor effluent streams and in units handling alkaline sour water. Several major failures have occurred in hydroprocessing reactor effluent systems due to localized corrosion. The least resistant material to this type of corrosion is: a) aluminum alloys b) carbon steel c) 300 Series SS d) duplex SS B 5.1.1.2.2 a) For materials susce...

Graphitization - Answer A change in the carbide phase of C/S and 0.5 Mo steels after long term exposure to 800° F to 1100°F temperatures causing decomposition into graphite nodules. Softening(Spheroidization) - Answer A change in the microstructure of steels after exposure in the 850 to 1400 range, where the carbide phases in C/S are unstable and may agglomerate from their normal plate-like form to a spheroidal form. Temper Embrittlement - Answer The reduction in toughness due t...

API 571 Practice Exam #2 Questions And Correct Answers, 100% Verified Ammonium bisulfide corrosion is an aggressive corrosion occurring in hydroprocessing reactor effluent streams and in units handling alkaline sour water. Several major failures have occurred in hydroprocessing reactor effluent systems due to localized corrosion. The least resistant material to this type of corrosion is: a) aluminum alloys b) carbon steel c) 300 Series SS d) duplex SS B 5.1.1.2.2 a) For materials susce...

CWB Module 22 Latest Update Graded A Complete the following: a) Chromium stabilizes the _____ form of iron b) Nickel stabilizes the _____ form of iron a) bcc b) fcc If a straight chromium steel of 18% Cr and < 0.1 % C is heated to 1000°C will it transform to austenite or remain as ferrite? remain as ferrite What is the predominant structure of an 18% Cr, 8% Ni steel at room temperature? austenite The chromium content of a stainless steel is 20%. Is it likely this is a martensitic grade?...

API 571 Practice Exam #2 Questions And Correct Answers, 100% Verified Ammonium bisulfide corrosion is an aggressive corrosion occurring in hydroprocessing reactor effluent streams and in units handling alkaline sour water. Several major failures have occurred in hydroprocessing reactor effluent systems due to localized corrosion. The least resistant material to this type of corrosion is: a) aluminum alloys b) carbon steel c) 300 Series SS d) duplex SS B 5.1.1.2.2 a) For materials susce...

API 571 Practice Exam #2 Questions And Correct Answers, 100% Verified Ammonium bisulfide corrosion is an aggressive corrosion occurring in hydroprocessing reactor effluent streams and in units handling alkaline sour water. Several major failures have occurred in hydroprocessing reactor effluent systems due to localized corrosion. The least resistant material to this type of corrosion is: a) aluminum alloys b) carbon steel c) 300 Series SS d) duplex SS B 5.1.1.2.2 a) For materials susce...

API 571 Practice Exam #2 Questions And Correct Answers, 100% Verified Ammonium bisulfide corrosion is an aggressive corrosion occurring in hydroprocessing reactor effluent streams and in units handling alkaline sour water. Several major failures have occurred in hydroprocessing reactor effluent systems due to localized corrosion. The least resistant material to this type of corrosion is: a) aluminum alloys b) carbon steel c) 300 Series SS d) duplex SS B 5.1.1.2.2 a) For materials susce...

API 571 Practice Exam #1 Questions And Correct Answers, 100% Verified At what oxygen content would many metals become flammable even at low pressures, whereas they are non-flammable in air? a) >10% b) >25% c) 20-40% d) >40% B 4.2.20.1 What area of a heater burning fuel oil with numerous impurities would first suffer damage from fuel ash corrosion. a) shock tubes b) radian tubes c) tube hangers and supports d) convection tubes C 4.4.6.4 c) Hydriding of titanium is a meta...