This book provides in-depth analysis and discussion of cracking phenomena associated with welding and additive manufacturing. Experts from around the world have contributed papers that describe cracking phenomena in a wide range of engineering materials, including steels, stainless steels, nickel-base alloys, and other nonferrous alloys. Cracking during both welding and additive manufacturing is presented and discussed. This proceedings follows from four previous conferences on the topic of cracking in welds and expands the focus to cracking associated with additive manufacturing processes.