Effect of Al5Ti1B and Al10Sr added to Al2024 alloy on mechanical properties and machinability
SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES, cilt.51, sa.4, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 51 Sayı: 4
- Basım Tarihi: 2026
- Doi Numarası: 10.1007/s12046-026-03364-6
- Dergi Adı: SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Compendex, INSPEC, MathSciNet, zbMATH, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Recep Tayyip Erdoğan Üniversitesi Adresli: Evet
Özet
This study systematically investigates the influence of grain refiner (Al5Ti1B) and modifier (Al10Sr) on the mechanical properties and machinability of the Al2024 alloy, a material widely used in the aerospace, automotive, and defence industries. Specifically, the effects of Al5Ti1B and Al10Sr additions, together with different solidification conditions, on the alloy's microstructure, hardness, strength, and machinability were examined. The Al2024 alloy was cast into two different mold types (sand and permanent) by adding a grain refiner (Al5Ti1B) and a modifier (Al10Sr) at two different ratios (0.1 and 0.5 wt%). Drilling tests were performed at a constant feed rate of 200 mm/min and rotational speeds of 2000, 4000, and 6000 rpm. The results revealed that the addition of master alloys and changes in cooling rate did not significantly alter the phase structure of the alloy but had a notable effect on grain refinement. Hardness and tensile strength values increased with both the addition of master alloys and the faster solidification achieved in permanent molds. In sand mold samples, tensile strength showed a clear correlation with grain size and hardness, whereas in permanent mold samples, it exhibited variations independent of these parameters. Machinability tests showed that thrust force decreased with increasing spindle speed for both mold types, while higher additive ratios in sand mold castings led to increased thrust force. The highest thrust forces were measured in the reference samples at 2000 rpm (362.8 N for sand mold and 335.8 N for permanent mold). Burr formation decreased with increasing hardness, and surface roughness varied with material properties and cutting parameters. Overall, the findings demonstrate that both solidification conditions and the addition of Al5Ti1B and Al10Sr play significant roles in controlling the microstructure and machinability of Al2024 alloys, providing valuable insights for optimizing casting and processing parameters.