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Materials
Published in Ansel C. Ugural, Mechanical Engineering Design, 2022
Cold working, also called strain hardening, is a process of forming the metal usually at a room temperature (see Section 2.3). This results in an increase in hardness and yield strength, with a loss in toughness and ductility (that can be recovered by a heat treatment process termed annealing). Cold working is used to gain hardness on low-carbon steels, which cannot be heat treated. Typical examples of cold-working operations include cold rolling, drawing, spinning, stamping, and forming. As noted previously, the relative ease with which a given material may be machined, or cut with sharp-edged tools, is called its machinability.
Mechanical Working and Rolling Process
Published in N.K. Gupta, Steel Rolling, 2021
Cold working is the plastic deformation of metal at a temperature and rate such that Strain hardening is produced. When the temperature at which deformation takes place is high enough to produce softening of metal, simultaneously with the strain hardening, which effect on the working process gets nullified. Plastic deformation under this condition is called hot working. So, hot working can be defined as “Plastic deformation at a temperature and rate such that no strain hardening is produced.”
Materials
Published in Ansel C. Ugural, Youngjin Chung, Errol A. Ugural, Mechanical Engineering Design, 2020
Ansel C. Ugural, Youngjin Chung, Errol A. Ugural
Cold working, also called strain hardening, is a process of forming the metal usually at a room temperature (see Section 2.3). This results in an increase in hardness and yield strength, with a loss in toughness and ductility (that can be recovered by a heat treatment process termed annealing). Cold working is used to gain hardness on low-carbon steels, which cannot be heat treated. Typical examples of cold-working operations include cold rolling, drawing, spinning, stamping, and forming. As noted previously, the relative ease with which a given material may be machined, or cut with sharp-edged tools, is called its machinability.
TEM analysis and related mechanical characterization of age hardened aluminium 7075-grey cast iron particle reinforced composites
Published in Cogent Engineering, 2022
Jamaluddin Hindi, Ananda Hegde, Gurumurthy Bm, Sathyashankara Sharma, Achutha Kini, Amar Murthy A, Muralishwara K
The strength and hardness of an alloy can be enhanced by either cold working or thermal treatment. Age or precipitation hardening is the most widely employed heat treatment process for nonferrous alloys and composites (Rao et al. (2010)).