Influence of non-metallic inclusions on the destruction of mechanically loaded steel products

Olga Myronova; Vyacheslav Goryany

doi:10.5937/zasmat2102113M

Autori

Olga Myronova Univerzitet u Duisburgu, Institut za tehnologije metala, Duisburg, Nemačka Autor
Vyacheslav Goryany Karl Buch Walzengiesserei GmbH & Co. KG, Siegen, Nemačka Autor

DOI:

https://doi.org/10.5937/zasmat2102113M

Ključne reči:

nemetalni uključci, čelični valjci, mehanički lom, keficijent termičkog širenja, metalografska ispitivanja

Apstrakt

U radu su detaljno opisani razlozi pucanja čeličnih proizvoda i pored toga što su svi uslovi mehaničkog opterečenja ispoštovani - radna naprezanja bila su mnogo manja od maksimalnog naprezanja na zatezanje primenjene vrste čelika. Dubinska metalografska analiza, kao i analiza naprezanja pokazuju da se osnovni uzrok tome nalazi u nastajanju nemetalnih uključaka u samom materijalu proizvoda, koji suštinski menjaju njegove mehaničke karakteristike.

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