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FME Transactions
2019, vol. 47, br. 4, str. 873-879
jezik rada: engleski
vrsta rada: neklasifikovan
objavljeno: 10/10/2019
doi: 10.5937/fmet1904873R
Creative Commons License 4.0
Istraživanje mehaničkih svojstava i habanja kod kompozita ojačanih titandiboridom
K. Ramakrishnan college of engineering, Faculty of Mechanical Engineering, India

e-adresa: sastra.ramesh90@gmail.com

Sažetak

Kompoziti sa matricom od aluminijuma su materijali koji se sve više koriste u avio i automobilskoj industriji zbog poboljšanog odnosa snage i težine, bolje otpornosti na koroziju i boljih triboloških svojstava. U ovom radu je legura AA7075 ojačana česticama titanborida (0, 4, 8, 12 tež. %) procesom izlivanja mešanjem. Prethodno zagrejani prah titandiborida je raspršen u istopljeni AA7075 na temperaturi od 850˚C da bi se poboljšala vlažnost i distribucija čestica. Zatezna čvrstoća, tvrdoća, otpornost na habanje i mikrostrukturna ispitivanja su izvršena kod kompozitnog materijala. Tribometar pin-on-disk je korišćen za ispitivanje ponašanja habanja. Rezultati su pokazali da se dodavanjem čestica titandiborida kompozitu sa matricom od aluminijuma poboljšavaju njegova svojstva. Skenirajućim elektronskim mikroskopom izvršena je analiza pohabane površine.

Ključne reči

AA7075; metal matrix composites; TiB2; stir casting; corrosion; properties

Reference

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