Page 74 - MATERIAL SCIENCE AND ENGINEERING PART 1
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Advanced Materials





                                                                                                        Refining the grain


                                                                                                        structure of the metal

                                                                                                        to ultrafine

                                                                                                        (submicron) levels,


                                                                                                        its strength and

                                                Semiconductor                  Biomaterials             hardness increase

                                                                                                        significantly


                                                                                                        compared to the

                                                                                                        coarse-grained

                                                                                                        (micron-size) bulk


                                                       Smart                  Nanomaterials             metal. For example,
                                                     Materials                                          nano-structured pure


                                                                                                        copper has a yield

                                                                                                        strength of six times


                                                                                                        that of coarse-grained

                                                                                                        copper.                          62



                                                    Politeknik Ibrahim Sultan
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