Page 4 - Heat Treatment of Steels (การอบ-ชุบ เหล็กกล้า)
P. 4

Morphology of Steel






               Phase                  Crystal structure                          Micrograph                     Characteristic




              Ferrite           BCC with                                                                               Soft,

                                Carbon in                                                                            Ductile,


                                    solid

                                 solution                                                                           Magnetic



            Austenite            FCC with                                                                              Soft,

                                Carbon in


                                    solid                                                                    Moderate strength,


                                 solution                                                                        nonmagnetic


            Cementite Compound


                                    Fe C
                                       3

                                   Ortho-                                                                      Hard and Brittle


                                 rhombic

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