Question

Question 1 1 pts In Steels, the final two "xx" numbers in the AISI/SAE nomenclature denote: Owt% Fe Vickers Hardness Heat Treatment Temperature wt%C Question 2 1 pts The Hardenability of the material with an increase in the alloy composition decreases stays the same increases

Answer 1

1] In steel final two xx number denotes wt% of Carbon (so option 4)

2]The hardenability increases with increasing alloy content and generally the hardenability increases for the elements Mn>Mo>Cr>Si. (option 3)

3]When plastic deformation of metal is carried out at temperature above the recrystallization temperature the process, the process is known as hot working. If this deformation is done below the recrystallization temperature the process is known as cold working. (option 2).

4]Gray iron is not used for ductile application, So it's false. (option 2).

5] Precipitation hardening depens on time, heat treatment temperature & alloy nucleation agent. ( option 1,2 & 4)

6]Saturated hydrocarbons have 4 bonds surrounding each carbon atom. (option 3).

7] A crosslink polymer have covalent bonds between their primary chains. (option 1)

8]A trans structure means R functional group will sit on opposite side of carbon chain. (option 1).

9]the process where monomers are combined with an initiator to form polymer is known as polymerization. (option 4)

10] Bulk polymers that are crystallized to from a melt are semicrystalline & form a spherulite structure. (option 2)

Do like if you get all the answers.