A dual-phase steel chemistry has been processed with varying intercritical annealing temperatures and the properties investigated. It was found that increasing temperature in region led to an increase volume fraction (52%–65%) grain size (1.8–3.3 µm) of martensite whilst ferrite decreased. The highest tensile strengths were at low temperatures, achieving 935 MPa elongation values 21% achieved t...

Abstract Dual-phase steels (DP steels) consist of ferrite and hard martensitic phase. For the high strength good formability, they are widely used in automotive applications. Compared with DP lower strength, DP1180 is more special for volume fraction martensite higher than that ferrite. In this paper, evolving plastic yielding behaviours insight into their microscale mechanisms were studied by ...

Abstract - This paper presents a new design of microwave microelectromechanical systems (MEMS) phase shifter for dual band wireless local area network (WLAN) applications. A bit is designed which product a constant phase shift of 11.25° by switching between two line that consist of 12 and 6 unitcells in each frequency band. A unitcell is constructed by gold membrane suspended over the coplanar ...