Utjecaj dozrijevanja na svojstva aluminijeve legure

undergraduate thesis

• Title (english): Aging effect on the properties of aluminium alloy
• Author: Borna Vragović
• Mentor: Danko Ćorić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2023-09-29, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Aviation, Rocket and Space Technology; Aviation Technology and Maintenance

Abstract

Aluminijeva svestranost, omjer čvrstoće i gustoće te otpornost na koroziju čine ga temeljnim
materijalom u zrakoplovstvu. Od oblikovanja nosivih komponenata zrakoplova do
poboljšanja provođenja topline i održavanja sigurnosti u električnim sustavima, aluminij i
njegove legure i dan danas ostaju nezamjenjive u suvremenoj zrakoplovnoj industriji,
pridonoseći dizajnu i radu sigurnih i učinkovitih zrakoplova.
Ovaj završni rad sastoji se od teorijskog i eksperimentalnog dijela. U teorijskom dijelu
opisana je primjena aluminija i aluminijevih legura kroz povijest, navedene su osnovne
skupine aluminijevih legura i opisana njihova svojstva kao i njihova primjena u raznim
konstrukcijskim dijelovima zrakoplova. Također su navedeni i detaljno opisani mehanizmi
očvrsnuća metalnih materijala s naglaskom na aluminijeve legure.
U eksperimentalnom dijelu rada provedeno je toplinsko očvršćivanje uzoraka aluminijeve
legure u različitim temperaturno-vremenskim režimima. Uzorci su nabavljeni iz „Croatia
Airlines“ u obliku lima, gdje se inače koriste kod reparacije i održavanja dijelova zrakoplova.
Nakon procesa toplinske obrade, mjerena je tvrdoća uzoraka i kasnije je napravljena analiza
utjecaja temperaturno-vremenskih parametara na svojstva legure.

Abstract (english)

The versatility of aluminum, its strength-to-density ratio, and corrosion resistance make it a
fundamental material in aviation industry. From shaping structural components of aircraft to
improving heat conductivity and maintaining safety in electrical systems, aluminum and
aluminum alloys remain indispensable in modern aviation, contributing to the design and
operation of safe and efficient aircraft.
This thesis consists of a theoretical and experimental part. In the theoretical section, the
application of aluminum and aluminum alloys throughout history is discussed. Basic groups
of aluminum alloys are listed, and their properties are described, along with their applications
in various structural parts of aircraft. Mechanisms of material strengthening, with a focus on
aluminum alloys, are also outlined in detail.
In the experimental section of the thesis, heat treatment processes were carried out on samples
of aluminum alloy under different temperature and time regimes. The samples were obtained
from "Croatia Airlines" in the form of sheets, typically used for the repair and maintenance of
aircraft components. After the heat treatment process, the hardness of the samples was
measured, and analysis of the influence of temperature-time parameters on the alloy's
properties was conducted.

• Keywords: aluminij; zrakoplovstvo; precipitacijsko očvrsnuće; tvrdoća
• Keywords (english): aluminium; aircraft engineering; precipitation hardening; hardness
• Language: croatian
• URN:NBN: urn:nbn:hr:235:925415
• Study programme: Title: Aeronautical Studies; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka zrakoplovnog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka zrakoplovnog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-09-26 22:50:48