Nucleation of austenite from pearlitic structure in an Fe-0.6C-1Cr alloy

作者：Li Z D^*; Miyamoto G; Yang Z G; Furuhara T

来源：Scripta Materialia, 2009, 60(7): 485-488.

DOI：10.1016/j.scriptamat.2008.11.041

• Pearlitic steels
• Austenitization
• Electron backscattering diffraction (EBSD)
• Nucleation of phase transformations
• Crystallography

The nucleation site of austenite from pearlitic structure during reverse transformation at 1073 K in Fe- 0.6C- 1Cr (mass%) alloy was examined by means of electron backscattering diffraction. It was found that austenite preferentially nucleates at high-angle boundaries (HABs) of pearlitic ferrite. Some austenite nuclei maintain a near Kurdjumov-Sachs (K-S) orientation relationship (OR) with one or two pearlitic ferrites adjacent to the HAB. Austenite nucleated at the HAB face preferentially grows into the adjacent pearlitic ferrite, deviating greatly from the K-S OR.

• 出版日期2009-4
• 单位清华大学