Correlation between mixing enthalpy and microstructure evolution of SmFe-based multicomponent alloys

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-05-08 DOI:10.1016/j.mseb.2025.118391

Wanting Wang, Kun Liu, Guolong Ni, Shuhuan Wang, Yunli Feng

{"title":"Correlation between mixing enthalpy and microstructure evolution of SmFe-based multicomponent alloys","authors":"Wanting Wang, Kun Liu, Guolong Ni, Shuhuan Wang, Yunli Feng","doi":"10.1016/j.mseb.2025.118391","DOIUrl":null,"url":null,"abstract":"<div><div>Completely amorphous ribbons of Sm2Fe17Zr1Nb0.4Cu0.2B0.2 multicomponent alloy, prepared by melt-spinning technique at the wheel speed of ∼ 40 m/s under the argon atmosphere, were achieved. The Sm2Fe17Zr1Nb0.4Cu0.2B0.2 multicomponent alloy is of the negative mixing enthalpy (ΔHmix), for the mixing enthalpy of Fe-B alloy is −26 kJ/mol, significantly lower than Fe-Zr, Fe-Nb and Fe-Sm, promoting the formation of amorphous phase. Detailed microstructural investigations were conducted using scanning electron microscopy and transmission electron microscopy. It revealed that the formation of completely Sm-Fe-Zr-Nb-Cu-B amorphous alloy without obviously precipitation of the second phase. The obtain of completely amorphous structure is conducive to the reconstruction of the microstructure in the later annealing process. The addition of Cu element increases the mixing enthalpy, resulting the reduction of the glass forming ability (GFA) of the nanocrystalline alloys, but it inhibits the formation of α-Fe soft magnetic phase effectively.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering: B","volume":"319 ","pages":"Article 118391"},"PeriodicalIF":3.9000,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Science and Engineering: B","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921510725004155","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Completely amorphous ribbons of Sm₂Fe₁₇Zr₁Nb_0.4Cu_0.2B_0.2 multicomponent alloy, prepared by melt-spinning technique at the wheel speed of ∼ 40 m/s under the argon atmosphere, were achieved. The Sm₂Fe₁₇Zr₁Nb_0.4Cu_0.2B_0.2 multicomponent alloy is of the negative mixing enthalpy (ΔH_mix), for the mixing enthalpy of Fe-B alloy is −26 kJ/mol, significantly lower than Fe-Zr, Fe-Nb and Fe-Sm, promoting the formation of amorphous phase. Detailed microstructural investigations were conducted using scanning electron microscopy and transmission electron microscopy. It revealed that the formation of completely Sm-Fe-Zr-Nb-Cu-B amorphous alloy without obviously precipitation of the second phase. The obtain of completely amorphous structure is conducive to the reconstruction of the microstructure in the later annealing process. The addition of Cu element increases the mixing enthalpy, resulting the reduction of the glass forming ability (GFA) of the nanocrystalline alloys, but it inhibits the formation of α-Fe soft magnetic phase effectively.

查看原文本刊更多论文

混合焓与smfe基多组分合金显微组织演变的关系

采用熔体纺丝技术，在氩气气氛下以~ 40 m/s的转速制备了Sm2Fe17Zr1Nb0.4Cu0.2B0.2多组分合金的完全非晶带。Sm2Fe17Zr1Nb0.4Cu0.2B0.2多组分合金的混合焓为负（ΔHmix），其中Fe-B合金的混合焓为- 26 kJ/mol，显著低于Fe-Zr、Fe-Nb和Fe-Sm，促进了非晶相的形成。利用扫描电镜和透射电镜对其进行了详细的显微结构观察。结果表明：Sm-Fe-Zr-Nb-Cu-B非晶态合金完全形成，第二相未明显析出。完全非晶结构的获得有利于后期退火过程中组织的重建。Cu元素的加入提高了混合焓，降低了纳米晶合金的玻璃化形成能力（GFA），但有效抑制了α-Fe软磁相的形成。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.