{"title":"Optimizing the strength-ductility balance of microalloyed Al-Mg-Si casting alloys","authors":"T.R. Luo , Z.Z. Fan , H.X. Hu , Y.Z. Tian","doi":"10.1016/j.matlet.2024.137645","DOIUrl":null,"url":null,"abstract":"<div><div>It is desired to optimize the strength-ductility balance of Al-Mg-Si casting alloy. In this study, Al-6 Mg-1Si-0.4Mn-0.5Cu-0.15Zr (6 Mg) and Al-8 Mg-1Si-0.8Mn-1.5Cu-0.15Zr (8 Mg) alloys were designed. The microstructure and mechanical properties of the alloys were further modified by heat treatment. The as-cast 6 Mg alloy exhibits balanced ultimate tensile strength (UTS) of 268.7 ± 11.5 MPa and elongation to failure (EF) of 5 ± 0.8 %, in contrast, the EF of the 8 Mg alloy is only 1.4 ± 0.3 %. Further heat treatment impacts slightly on the tensile properties of the 6 Mg alloy but enhances the ductility of the 8 Mg alloy significantly. Mechanisms for the distinct responses on the heat treatment of the alloys were discussed.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"378 ","pages":"Article 137645"},"PeriodicalIF":2.7000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167577X24017853","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
It is desired to optimize the strength-ductility balance of Al-Mg-Si casting alloy. In this study, Al-6 Mg-1Si-0.4Mn-0.5Cu-0.15Zr (6 Mg) and Al-8 Mg-1Si-0.8Mn-1.5Cu-0.15Zr (8 Mg) alloys were designed. The microstructure and mechanical properties of the alloys were further modified by heat treatment. The as-cast 6 Mg alloy exhibits balanced ultimate tensile strength (UTS) of 268.7 ± 11.5 MPa and elongation to failure (EF) of 5 ± 0.8 %, in contrast, the EF of the 8 Mg alloy is only 1.4 ± 0.3 %. Further heat treatment impacts slightly on the tensile properties of the 6 Mg alloy but enhances the ductility of the 8 Mg alloy significantly. Mechanisms for the distinct responses on the heat treatment of the alloys were discussed.
期刊介绍：
Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials.
Contributions include, but are not limited to, a variety of topics such as:
• Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors
• Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart
• Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction
• Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots.
• Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing.
• Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic
• Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive
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