Dislocations are defects in the arrangement of atoms in a metal, and they are present in all metals. Dislocations are important because their motion through a metal enables metals to deform before cracking. This enables the use of deformation type manufacturing processes (e.g. cold rolling, forging, deep drawing) to form metals into desired shapes.
This lesson explains about dislocations and how they move through a metal. This information is needed to understand other lessons and articles that teach about the use of alloying, heat treating, and mechanical deformation processes to modify metal strength. Examples of how alloying, heat treating, and cold-working affect dislocation motion are provided.
What you will learn about dislocations
- What a dislocation is
- Importance of dislocations to metal behavior
- Effects of dislocations on metal strength
We recommend you take the lesson below prior to taking the Dislocations lesson
"A group of us took several courses (Principles of Metallurgy, Metallurgy of Steel, Corrosion of Metals) to become more knowledgeable about the science of metals to avoid problems. For me, the biggest impact of the training was on working with suppliers. I feel more confident asking questions and I now know the suppliers which know their stuff and which ones don’t. And it was great being able to get the training when it was convenient for me."Sam Bloodgood, VP Process Improvement, Hydraforce, Inc.
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“This is an excellent course (Metallurgy of Steel Heat Treating) for learning basic heat treating practices. The course introduces and covers a broad range of processes. I would recommend it for anyone in the steel business.”Jim Marks, Magellan Corporation
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