Development Of Advanced High Strength Steels Essay

1368 Words May 20th, 2016 6 Pages
For the past two decades, more research efforts have been focused on the development of Advanced High Strength Steels (AHSS). The AHSS include Dual Phase (DP) steels, [1–10], High Strength Low Alloy steels (HSLA), Transformation Induced Plasticity (TRIP) steels, Twinning Induced Plasticity (TWIP) steels, and medium manganese steels, (Bouaziz et al., 2013). The majority of the research are focused on the development of third generation of steels due to interest in the mechanical properties of high manganese steels. Only recently the TWIP steels have received considerable attention, owing to the increasing demand for high-performance auto materials from the automobile manufacturing industry (Ohjoon, et al., 2010; Grajcara,et al., 2012), cryogenic applications (Choi et al., 2012), and the military and transportation industry (Bartlett et al., 2014). It possesses a combination of strength and elongation properties, as shown in Figure 2.1, in comparison to other types of steels, including toughness, fatigue resistance, and welding properties.

Figure 2.1: Billur, et al., (year) Three generations of advanced high strength steels for automotive applications.

The properties are mainly controlled by the chemical composition of the steel. In high manganese steels, manganese is the major alloying element, accounting for a larger weight percentage. Manganese contents are considerably higher than those found in common steel grades (Hills et al., 2015). Regarding the major alloying…

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