Final answer:
Solid-state welding offers higher joint strength and eliminates heat-induced distortion, while fusion welding is generally more cost-effective and offers a wider range of material compatibility.
Step-by-step explanation:
The advantages of solid-state welding compared to fusion welding include factors such as not melting the base materials, which results in higher joint strength and the elimination of heat-induced distortion, meaning there is no need to manage the effects of heating and cooling metals. On the other hand, fusion welding often requires less sophisticated equipment and is generally more cost-effective, making it a better choice for a wider range of material compatibility, including dissimilar metals. Fusion welding also benefits from being a well-understood and widely implemented method, allowing for easier access to resources and trained personnel.