ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
There has been a big demand for increased vehicle safety and weight reduction ofauto-bodies. An extensive use of high strength steels is one of the ways to answer the requirement.Since the crashworthiness is improved by applications of higher strength steels to crashworthinessconscious structural components, various types of advanced high strength steels have been developed.The crash energy during frontal collisions is absorbed by the buckling and bending deformations ofthin wall tube structures of the crushable zone of auto-bodies. In the case of side collision, on theother hand, a limited length of crushable zone requires the components to minimize the deformationduring the collision. The lower the strength during press forming, the better the press formability isexpected. However, the higher the strength at a collision event, the better the crashworthiness can beobtained. It can, therefore, be concluded that steels with higher strain rate sensitivities are desired.Combinations of soft ferrite phase and other hard phases were found to improve the strain ratesensitivity of flow stresses. Bake hardening is also one of the ways to improve the strain ratesensitivity of flow stresses
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.4386.pdf
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