2- Which one of the following tool materials has the highest hot hardness? a) O High speed steels Ceramics Carbides Cast alloys Boş bırak

Q: One way to make a metal stronger is to increase the metals grain size

A: given: One way to make the metal stronger is to increase the metals grain size

Q: The melting point of steel increases with

A: The melting point of steel increases with the reduction in carbon content and vice-versa.

Q: Which is/are true of creep? Check the right answers a) creep is time dependent b) the units of…

A:

Q: A grain size of 10, according to ASTM, indicates that the metal or alloy has good resistance to…

A:

Q: There are two samples, A and B, ere tested by Rockwell hardness test. Sample A is tested in B scale,…

A: HRB means the Hardness Rockwell B scale HRB means the Hardness Rockwell F scale

Q: Which of the following properties is impact strength indicative of? a) Elasticity b) Hardness c)…

A: Impact strength refers to the ability of a material to absorb energy and resist fracture under a…

Q: Quenching is a process that can reduce the grain size and form a lot of grain boundaries in the…

A: Quenching: In this process metal is heated above its recrystallization and than cool it rapidly. The…

Q: Which choice below best describes the mechanical property of materials called toughness?    a.…

A: Correct Answer - (c) How much energy a material can absorb without breaking.

Strengthening of Alloys

Strengthening of the alloys is required as metals become weak due to various lattice defects, metal bonding phenomena. The strength of the metals is not enough for any mechanical work. The internal dislocations of any metals arise due to forming processes. Due to the movement of these dislocations, the metals are plastically deformed.