Analysis of sheet steel fracture during deep drawing
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Low-carbon steel sheet used for the fabrication of automotive brake components was tearing during deep drawing. The associated mill certificates revealed that the coil met the specified chemical composition and mechanical properties. Metallographic evaluation revealed a severe variation with respect to grain size through the thickness of the steel sheet, as well as a slight segregation of pearlite. Insufficient temperature during hot rolling in combination with a high coiling temperature resulted in the observed microstructural gradient. The anisotropic mechanical properties were amplified by the slight carbon segregation.
Keywordscarbon segregation deep drawing hot rolled sheet coil microstructural gradient
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- 1.L.E. Samuels: Light Microscopy of Carbon Steels, ASM International, Materials Park, OH, 1999.Google Scholar
- 2.Properties and Selection: Irons, Steels, and High-Performance Alloys, vol. 1, ASM Handbook, ASM International, Materials Park, OH, 1990.Google Scholar
- 4.N.J. Petch: “The Cleavage Strength of Polycrystals,” J. Iron Steel Inst., 1953, 174, pp. 25–28.Google Scholar