Though the tensile strength and yield strength of the 4 test steels all show a decreasing trend with the increase of cooling rate ( Figure 9 a,b), the decreasing rates of S3 and S4 are significantly lower than that of S1 and S2.
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Effect of Boron on Hot Ductility and Room-Temperature Tensile Properties of Microalloyed Steels with Titanium and Niobium.
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