The influence of silicon and aluminum alloying on the lattice parameter and stacking fault energy of austenitic steel

作者：Lehnhoff G R; Findley K O^*; De Cooman B C

来源：Scripta Materialia, 2014, 92: 19-22.

DOI：10.1016/j.scriptamat.2014.07.019

• Metastable austenitic steel
• Stacking fault energy
• Transmission electron microscopy (TEM)
• Lattice parameter

The influence of Si and Al on the lattice parameter and stacking fault energy (SFE) of austenitic steel was studied. X-ray diffraction indicated that 2.5 wt.% Al alloying increased the austenite lattice parameter by 1.41 x 10(-3) nm, whereas 2.5 wt.% Si alloying had little effect. Partial dislocation separation measurements from weak-beam dark-field images indicated that 2.5 wt.% Al alloying increased the SFE by 12-17 mJ m(-2) and 2.5 wt.% Si alloying decreased the SFE by 6-7 mJ m(-2).

• 出版日期2014-12-1