1. Age hardening in a duplex stainless steel;Solomon,1983
2. De Ferri Metallographia Vol. V. Fractography and Microfractography;Henry,1979
3. ASTM E8M-89b Standard Test Methods for Tension Testing of Metallic Materials (Metric) American Society for Testing Materials Annual Book of ASTM Standards Vol.03.01.
4. BS 5762 Methods for Crack Opening Displacement Testing,1979