Final Answer:
Brazing, as a joining process, has the capacity to create joints that possess a tensile strength substantially higher than the filler metal itself. Therefore the given statement " A brazed joint can be made that has a tensile strength four to five times higher than the filler metal itself. " is True.
Step-by-step explanation:
Brazing involves joining metals using a filler material melted at a lower temperature than the base metals. During the brazing process, capillary action draws the molten filler metal into the joint, creating a strong bond. This method allows for the creation of joints that can surpass the tensile strength of the filler metal itself.
The key to achieving this enhanced strength lies in the metallurgical properties of the joint. The bonding occurs at the molecular level, generating a solid intermetallic compound between the base metals and the filler material. This compound often exhibits superior mechanical properties compared to the filler metal alone, resulting in a joint with significantly increased tensile strength.
Factors such as proper surface preparation, suitable filler material selection, and precise control of the brazing process significantly contribute to achieving this notable enhancement in tensile strength.