| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.18 ( May 1988 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Age-Hardening Behavior and Dent Resistance of Bake-Hardenable and Extra Deep-Drawable High Strength Steel Mitsumasa Kurosawa, Susumu Satoh, Takashi Obara, Kozo Tsunoyama |
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Synopsis : Age-hardening behavior of deep-drawable high strength steel has been investigated by measuring dent resistance in a model panel and yield strength change in a tensile test. Obtained results are as follows: (1) Bake-hardenability measured by the tensile test is in good agreement with the dent resistance of a pressed panel, (2) sufficient hardening effect is obtained even at a lower temperature aging, (3) once the sheet steel is deformed, age-hardening starts swiftly, (4) hardening is accelerated by increasing the strain and the amount of solute C. |
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