A Dislocation-Based Theory for the Deformation Hardening Behavior of DP Steels: Impact of Martensite Content and Ferrite Grain Size

<table>Flow stress at different strains versus <svg height="17.875" id="M295" style="vertical-align:-3.22281pt" version="1.1" viewbox="0 0 58.012501 17.875" width="58.012501" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,17.875)">
<g transform="translate(72,-57.7)">
<text transform="matrix(1,0,0,-1,-71.95,60.96)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑑</tspan>
</text>
<text transform="matrix(1,0,0,-1,-65.3,57.84)">
<tspan style="font-size: 8.75px; " x="0" y="0">f</tspan>
<tspan style="font-size: 8.75px; " x="2.6256001" y="0">e</tspan>
<tspan style="font-size: 8.75px; " x="6.511488" y="0">r</tspan>
<tspan style="font-size: 8.75px; " x="9.6447039" y="0">r</tspan>
<tspan style="font-size: 8.75px; " x="12.725408" y="0">i</tspan>
<tspan style="font-size: 8.75px; " x="15.158464" y="0">t</tspan>
<tspan style="font-size: 8.75px; " x="17.59152" y="0">e</tspan>
</text>
<text transform="matrix(1,0,0,-1,-43.32,66.03)">
<tspan style="font-size: 8.75px; " x="0" y="0">−</tspan>
<tspan style="font-size: 8.75px; " x="5.99512" y="0">1</tspan>
<tspan style="font-size: 8.75px; " x="10.37112" y="0">/</tspan>
<tspan style="font-size: 8.75px; " x="12.804176" y="0">2</tspan>
</text>
</g>
</g>
</svg>.</table>

Journal of Metallurgy

fig18

Figure 18

Figure 18: A Dislocation-Based Theory for the Deformation Hardening Behavior of DP Steels: Impact of Martensite Content and Ferrite Grain Size 