Annealing and cold construction are techniques used to adjust the properties of materials like metals and glass by reversing work hardening processes and relieving internal stresses.
Annealing is a technique used in metallurgy to reverse work hardening and make materials ductile again by heating them so atoms can move and crystal grains grow, reducing the free energy of the material. This process is essential for strengthening structural materials like iron beams. Cold construction refers to shaping glass or metals at cool temperatures, which can introduce internal stresses that are relieved through annealing, a slow cooling process that helps maintain the material's structural integrity and properties.
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