Q. How much chromium is required to provide oxidation resistance for use over 1000°C?

View solution

Q. Molybdenum with hydrogen can be used up to ________

View solution

Q. 10% chromium mixed with ______ can be used up to 1100°C.

View solution

Q. Which of these metals does not require alloying for oxidation resistance?

View solution

Q. _________ is used to prevent duralumin from corrosion.

View solution

Q. Galvanized ion is made by dipping low carbon steel in molten zinc at ________

View solution

Q. Which of these is not a way to prevent intergranular corrosion?

View solution

Q. Dezincification of brass is prevented by addition of ________

View solution

Q. Season-cracking can be prevented by cold-working of brass at _________

View solution

Q. How can caustic embrittlement be avoided?

View solution

Q. How is fracture stress defined?

View solution

Q. What is the SI unit of fracture toughness?

View solution

Q. The tensile strength required to break interatomic bonds across two adjacent planes is ________

View solution

Q. What is the breaking stress of brittle materials?

View solution

Q. In crystalline materials, fracture occurs normal to crystallographic planes called ___________

View solution

Q. What is the surface energy of a crack?

View solution

Q. Griffith theory is applicable for ______ materials.

View solution

Q. The fracture resistance of a material is defined as its ________

View solution

Q. What is Gc with reference to Griffith Theory?

View solution

Q. What is the fracture toughness of aluminum alloy?

View solution