Microstructure, Properties, and Reversed Austenite Transformation Behavior of 04Cr13Ni5Mo Maraging Stainless Steel at Different Tempering Temperatures

As the tempering temperature increased from 520 °C to 580 °C, the tensile strength and yield strength of the tested steel both presented a decreasing trend, and the elongation after fracture increased, while the impact absorption energy presented a decreasing trend, as shown in Figure 9 .

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However, for the 04Cr13Ni5Mo, with the increase in tempering temperature, the proportion of low-angle grain boundaries presented an increasing trend, which was mainly related to the formation of reversed austenite during the tempering process.

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With the tempering temperature increasing from 520 °C to 640 °C, the strength of the studied steel showed a trend of first decreasing, then stabilizing, and then decreasing again, while the plasticity showed a stable upward trend.

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