plastik deformatsiya bilan olingan nanomateriallar xossalari, olish usullari va texnalogiy

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lides/_rels/slide7.xml.rels ppt/slides/_rels/slide8.xml.rels ppt/slides/_rels/slide9.xml.rels [content_types].xml образец заголовка образец подзаголовка образец заголовка образец текста второй уровень третий уровень четвертый уровень пятый уровень образец заголовка образец текста образец заголовка образец текста второй уровень третий уровень четвертый уровень пятый уровень образец текста второй уровень третий уровень четвертый уровень пятый уровень образец заголовка образец текста образец текста второй уровень третий уровень четвертый уровень пятый уровень образец текста образец текста второй уровень третий уровень четвертый уровень пятый уровень образец заголовка образец заголовка образец текста второй уровень третий уровень четвертый уровень пятый уровень образец текста образец заголовка вставка рисунка образец текста образец заголовка образец текста второй уровень третий уровень четвертый уровень пятый уровень образец заголовка образец текста второй уровень третий уровень четвертый уровень пятый уровень образец заголовка образец текста второй уровень третий уровень четвертый уровень пятый уровень tayyorladi : guruh : e’tiboringiz uchun raxmat! образец текста второй уровень третий уровень четвертый уровень пятый уровень mavzu: plastik deformatsiya …

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o‘zgartiradi . bunda bir yo‘la metallning strukturasida , uning mexanik va fizik xossalarida o‘zgarish ro‘y beradi . yuqorida qayd qilganimizdek , bosim bilan ishlashda xomakining shakli dastlabki holatiga qaytmaydigan qilib o‘zgartiriladi , bu esa xomaki metalida plastik holat mavjudligidan darak beradi . plastik va elastik deformatsiya . naklyop metallarni bosim bilan ishlash deb, tashqi kuch ta’siri ostida ( masalan , bolg‘a bilan urib , press bosimi ostida ) xomaki shaklini o‘zgartirishga aytiladi . zarb yoki bosim ta’sirida oldi deformatsiya paydo bo‘lishi bilan metall o‘z shaklini kerakli yo‘nalishda yemirilmasdan o‘zgartiradi . bunda bir yo‘la metallning strukturasida , uning mexanik va fizik xossalarida o‘zgarish ro‘y beradi . yuqorida qayd qilganimizdek , bosim bilan ishlashda xomakining shakli dastlabki holatiga qaytmaydigan qilib o‘zgartiriladi , bu esa xomaki metalida plastik holat mavjudligidan darak beradi . demak, biror tashqi kuch ta’sirida metall (qotishma) yemirilmay, o‘z shaklini dastlabki holatiga qaytmaydigan tarzda o‘zgartira olish xususiyati uning plastikligi deb, …

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ga ( yoki rezina boiagiga ) ta’sir ettirilgan kuch olingandan keyin yana u avvalgi holatiga qaytadi . plastik deformatsiyada esa metall kristall panjaralarining shakli o'zgarihginn qolttiasdan , balki kristallning bir qismi boshqa qismiga niibntnn siljiydi , ta’sir ettirilgan kuch olinganda kristallning siljigan ql *mi avvalgi joyiga qaytmaydi , ya’ni deformatsiya saqlanib qoladi . ma’lumki , detalga biror tashqi kuch ta’sir ettirilganda uning geometrik shakli o'zgarishi deformatsiya deyiladi . har qanday normal haroratda metall asosan elastik va plastik deformatsiyalardan iborat bo‘ladi . metallga ta’sir ettirilgan tashqi kuch olingandan keyin metall dastlabki shakliga qaytsa , bunday deformatsiya elastik deformatsiya deb ataladi . masalan , po'lat prujinaga ( yoki rezina boiagiga ) ta’sir ettirilgan kuch olingandan keyin yana u avvalgi holatiga qaytadi . plastik deformatsiyada esa metall kristall panjaralarining shakli o'zgarihginn qolttiasdan , balki kristallning bir qismi boshqa qismiga niibntnn siljiydi , ta’sir ettirilgan kuch olinganda kristallning siljigan ql *mi avvalgi joyiga qaytmaydi …

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