What is the composition (wt% C) of a steel with AISI designation 1090? . Would this be considered a low, medium, or high carbon steel? (circle one)

Write the percentage of% C and other alloying elements of the steel given a short designation as 45CrVMoW58.

12 – On modern large aeroplanes structure where can we find a more frequent use oftitanium alloys? And why is that?

Match the steel microstructures to their names A B C

a) Explain why work hardenable aluminium alloys cannot be age-hardened because the precipitation hardening reaction does not occur. To maintain strength, what might be another reason why aluminium alloys can't be work hardened? (Think about dislocations.)

This is the microstructure of astm a 128 a high magnesease steel. This microstructure was taken after etching the samples. After etching why did it turn the microstructure colors. What can be determined when looking at the microstructure of this sample

Write an paragraph on each of the following including information/data about the general composition, properties, uses, applications and their reasons:      Mild steel 1060 steel 304 stainless steel HSLA steel Gray cast iron

T or F -In the hypereutectoid steel alloy, the primary phase is Cementite ( iron carbide )   -In the Pb-Sn hypoeutectic alloy, the primary phase is the α-phase  -The eutectic composition of the solder alloy is 98%wt Sn -In the steel alloys, the weight percent of the alloying elements affects the eutectoid temperature and Ceutectoid wt%C -Austenite phase has a BCC crystal structure The microstructure is characterized by: a.The number of phases present b.The present phases’ proportions. c.How these phases are arranged or distributed d.all of the answers