Table 2.

List of tempering heat-treatments used, and the retained austenite content of each sample. In the case of Alloy 3, the actual mixture of austenite and ferrite is generated by annealing at the designated temperature.

Alloytempering temperature (°C)tempering time (h)Vγ
1untempered0.21
14502.00.15
15000.50.10
15001.00.07
2untempered0.15
24502.00.07
25000.50.03
25001.00.02
362024.00.26