Description:
The Materials Science and Technology Teacher's Workshop (MAST) provides this experiment on "the effect of cold-working (strain-hardening) and annealing on the ability of wires of the same metal to support a load." Students will gain hands-on experience with cold-working and annealing and get to observe their effects on metal.
The lesson includes a step by step explanation of the laboratory procedure, discussion questions and teacher notes. The exercise should take about two and a half class sessions to complete in full; the activity is split into three sections.
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