Question

question 2 what is the most likely result of using a filler metal with a different composition than the base metal? a the weld may crack or weaken under stress. b the weld will become stronger over time. c the base metal will melt more quickly. d the welding process will be faster and more efficient.

Explanation:

When a filler metal with a different composition than the base metal is used in welding, the mismatch in properties such as thermal - expansion coefficients and mechanical properties can lead to stress concentrations. These stress concentrations can cause the weld to crack or weaken under stress.

Answer:

A. The weld may crack or weaken under stress.