Ruxia Liu , Mengyu Zhang , Wei Zhao , Jian Zhang , Yong Xiao , Guilin Wu , Shuize Wang , Xinping Mao
{"title":"含锌镁钪合金的时效硬化和析出演变","authors":"Ruxia Liu , Mengyu Zhang , Wei Zhao , Jian Zhang , Yong Xiao , Guilin Wu , Shuize Wang , Xinping Mao","doi":"10.1016/j.matlet.2024.137629","DOIUrl":null,"url":null,"abstract":"<div><div>The precipitation evolution and aging hardening effect of Zn alloying on the Mg-Sc alloy were analyzed in this study. Needle-like nanosized ScZn precipitates from the matrix at low-temperature aging, bulk-like ScZn precipitation gradually forms at high temperatures above 600 °C. Moreover, the α-phase also precipitates from the matrix during aging. The initial hardness of the solid solution β-phase alloy was almost 126.7 ± 3.2HV, the hardness of the alloy increases first and then decreases with the increase of the aging temperature from 200 °C to 600 °C. The alloy aged at 300 °C owns the highest hardness of 196.9 ± 6.9HV, further TEM reveals that the coherent nanosized α-phase precipitate with the Burgers orientation relations of β-phase and the needle-like ScZn precipitates are the main factors for the aging hardening of this Mg-Sc-Zn alloy after aging at 300 °C. These findings may provide the scientific basis for the alloying design of high-performance Mg-Sc alloys.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"378 ","pages":"Article 137629"},"PeriodicalIF":2.7000,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Aging hardening and precipitation evolution of Mg-Sc alloy with Zn alloying\",\"authors\":\"Ruxia Liu , Mengyu Zhang , Wei Zhao , Jian Zhang , Yong Xiao , Guilin Wu , Shuize Wang , Xinping Mao\",\"doi\":\"10.1016/j.matlet.2024.137629\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The precipitation evolution and aging hardening effect of Zn alloying on the Mg-Sc alloy were analyzed in this study. Needle-like nanosized ScZn precipitates from the matrix at low-temperature aging, bulk-like ScZn precipitation gradually forms at high temperatures above 600 °C. Moreover, the α-phase also precipitates from the matrix during aging. The initial hardness of the solid solution β-phase alloy was almost 126.7 ± 3.2HV, the hardness of the alloy increases first and then decreases with the increase of the aging temperature from 200 °C to 600 °C. The alloy aged at 300 °C owns the highest hardness of 196.9 ± 6.9HV, further TEM reveals that the coherent nanosized α-phase precipitate with the Burgers orientation relations of β-phase and the needle-like ScZn precipitates are the main factors for the aging hardening of this Mg-Sc-Zn alloy after aging at 300 °C. These findings may provide the scientific basis for the alloying design of high-performance Mg-Sc alloys.</div></div>\",\"PeriodicalId\":384,\"journal\":{\"name\":\"Materials Letters\",\"volume\":\"378 \",\"pages\":\"Article 137629\"},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2024-10-28\",\"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/S0167577X24017695\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167577X24017695","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}
Aging hardening and precipitation evolution of Mg-Sc alloy with Zn alloying
The precipitation evolution and aging hardening effect of Zn alloying on the Mg-Sc alloy were analyzed in this study. Needle-like nanosized ScZn precipitates from the matrix at low-temperature aging, bulk-like ScZn precipitation gradually forms at high temperatures above 600 °C. Moreover, the α-phase also precipitates from the matrix during aging. The initial hardness of the solid solution β-phase alloy was almost 126.7 ± 3.2HV, the hardness of the alloy increases first and then decreases with the increase of the aging temperature from 200 °C to 600 °C. The alloy aged at 300 °C owns the highest hardness of 196.9 ± 6.9HV, further TEM reveals that the coherent nanosized α-phase precipitate with the Burgers orientation relations of β-phase and the needle-like ScZn precipitates are the main factors for the aging hardening of this Mg-Sc-Zn alloy after aging at 300 °C. These findings may provide the scientific basis for the alloying design of high-performance Mg-Sc alloys.
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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