Journal
MATERIALS LETTERS
Volume 64, Issue 2, Pages 207-210Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2009.10.040
Keywords
Tempering; Nanoindentation; Dual phase steel; Hardness; Rapid thermal cycles
Funding
- Auto21
- Canadian Government
- Ontario Government
- International Zinc Association (IZA), Belgium
- Arcelor Mittal Dofasco and Huys Industries in Canada
- CONACYT Mexico
- Autonomous University of Zacatecas Mexico
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A nanoindentation hardness study has been conducted on the tempered region and the base metal in a dual phase steel subjected to rapid thermal cycles of resistance spot welding. Nanohardness results revealed softening at nano-scale for tempered martensite when compared to martensite in the base metal. At the tempered region, the ferritic matrix presented a slight reduction in hardness while the tempered martensite seemed to have a major contribution to the measured softening at micro-scale. (C) 2009 Elsevier B.V. All rights reserved.
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