Considering the diffusion welding of the following material combinations, how easy would it be to produce welds in each case? Explain your answer in each case. a. Pure aluminum (AA1100) to aluminum alloy AA6061
b. Ti–6Al–4V to Ti–6Al–6V–2Sn
c. Ni-base Alloy 625 to Alloy 625
d. AISI 304 austenitic stainless steel to AISI 304.

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above

For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.

Acommercial grade cubical freezer, 4 m on a side, has a composite wall consisting of an exterior sheet of 5.0-mm thick plain carbon steel (kst= 60.5 w/m k), an intermediate layer of 100-mm thick polyurethane insulation (kins 0.02 w/m k), and an inner sheet of 5.0- mm thick aluminium alloy (kal polyurethane insulation and both metallic sheets are each characterized by a thermal contact resistance of r 2.5 x 104 m2 k/w. (a) what is the steady-state cooling load that must be maintained by the refrigerator under conditions for which the outer and inner surface temperatures are 25°c and -5°c, respectively? (b) for power saving purpose, which wall material should be increased/reduced in. thickness in order to reduce 50% of the cooling load found in part (a)? redesign the thickness of the proposed material. 177 w/m-k). adhesive interfaces between the q=575.93 w