Complex Phase (CP) Steels

Complex Phase (CP) Steels

CP steels typify the transition to steel with very high ultimate tensile strengths. The microstructure of CP steels contains small amounts of martensite, retained austenite and pearlite within the ferrite/bainite matrix. An extreme grain refinement is created by retarded recrystallization or precipitation of microalloying elements like Ti or Cb. In comparison to DP steels, CP steels show significantly higher yield strengths at equal tensile strengths of 800 MPa and greater. CP steels are characterized by high energy absorption and high residual deformation capacity. Engineering and true stress-strain curves for CP steel grades are located in AHSS Application GuidelinesĀ Image Gallery asĀ Figure 2-9D.

 
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