Page 234 - MATERIAL SCIENCE AND ENGINEERING PART 1
P. 234

Failure of                               1         2         3
                                                                          3

              materials









                                   Creep                      2. In the second stage, the


                                                                      rate of elongation is


                                                                      constant.


                                                              3. In the third stage, the


                                                                      elongation rate increases


                                                                      rapidly until the material



                                                                      fails. The stress for a


                                                                      specified rate of strain at


                                                                      a constant temperature is


                                                                      called creep strength.



                                                                                                                                        215



                                                    Politeknik Ibrahim Sultan
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