Coarse pearlite - Study guides, Class notes & Summaries

Bainite is a mixture of needles of carbide and austenite. - Answer-False The hardness of martensite goes down gradually during tempering at room temperature subsequent to quenching. - Answer-False Higher the tempering temperature, smaller is the tempering time needed. - Answer-True Banite is tougher and harder than pearlite. - Answer-True Tempering increases the hardness of quenched steels. - Answer-False Steel refining means making steel from pig iron, scrap, or ore. - Answer-Tru...

CWB level 3 Module 21 practice questions The maximum solubility of carbon in a iron is: (a) 2%. (b) 0.002%. (c) 0.02%. (d) There is no solubility. - correct answer (c) 0.02%. True or false? When a steel is heated into the austenite region, all carbon and most other compounds dissolve to form a single phase. - correct answer True True or false? Pearlite is a single phase. - correct answer False What is the resulting structure of a 0.6% carbon steel slowly cooled from 900°C to ro...

CWB Level 3 Module 21 Welding Metallurgy of SteelsWhat forms the largest group of commercially important alloys? - correct answer Steel Steels are alloys of iron with less than ____ % of carbon plus a wide range of other elements - correct answer 2 % Elements which form interstitial solutions with iron - correct answer Carbon, nitrogen, boron and hydrogen Elements which from substitutional solutions with iron - correct answer Manganese and Silicon Below 910 C, Iron is in ________...

Types of cast irons: - Answer Gray Iron Malleable Iron White Iron Ductile Iron Alloy Irons Malleable iron is ____ - Answer heat treated for ductility White iron is ____ - Answer hard and wear resistant Ductile iron has ____ - Answer some ductility as cast Cast irons are located where on the iron-iron carbide diagram? - Answer Above 2% C Casting methods: - Answer sand casting permanent mold die casting investment casting centrifugal casting shell molding Gray iron can b...

Compared to fibre core, IWRC tends to be _______ resilient and less capable of absorbing shock loads a. more b. less c. equally d. slightly more b. less What rope is considered to be a standard wire a. Lang lay b. right regular lay c. left regular lay d. performing lay b. right regular lay What safety factor is used for elevators? a. 30-1 b. 10-1 c. 20-1 d. 10-80 ? Google What is the maximum capacity in Kg of a medium duty ladder? a. 136 b. 102 c. 99 d. 40...

MNE 3701 -Test Exam Review with Elaborated Answers 2023. Miller Indices characterizing X-ray diffraction peaks for FCC satisfy which of the following constructing interference condition? (h,k,l) are either all odd or even The wavelength of typical X-Rays used in diffraction experiments are of the order of? Nanometers During deformation which of the following material properties characterizes the beginning of PLASTIC deformation? Yield Strength Charpy and Izod mechanical ...

Matse 259 Final Exam Review With 100% Correct Answers...

MATSE 259 Exam 4 QUESTIONS AND ANSWERS | GRADED A austenite to pearlite (ferrite + cementite) Correct Answer: γ → α +Fe₃C isothermal Correct Answer: TTT curve is an ____________ transformation coarse pearlite Correct Answer: occurs at temperatures just below eutectoid (727°C), consists of thick layers, and has higher diffusion rates and slower cooling rates fine pearlite Correct Answer: occurs at temperatures around 540°C, consists of thin layers, and has lower diffusion ...

MNE 3701 Materials LAB Revision Exam with Updated Answers 2023 Types of Testing and what they test for Rockwell=Hardness Charpy & Izod=Toughness Jominy-End Quench=Harden-ability Yield Strength stress at which a specified limiting permanent set characterizes beginning of plastic deformation Ultimate or Tensile Strength dividing the max load sustained by the original cross sectional area Fracture or Rupture Strength dividing the load sustained at rupture by the original...