Alexander Kauffmann , Bronislava Gorr , Martin Heilmaier
{"title":"High temperature oxidation protection in body-centered cubic superalloys","authors":"Alexander Kauffmann , Bronislava Gorr , Martin Heilmaier","doi":"10.1016/j.scriptamat.2025.116784","DOIUrl":null,"url":null,"abstract":"<div><div>Materials from the class of metallic-intermetallic, body-centered cubic (BCC) superalloys with microstructures composed of A2, B2 and L2<sub>1</sub> phases are candidates for high temperature application due to high solidus/solvus temperatures and the expectedly good creep resistance. However, experience with their base systems indicates substantial problems that need to be tackled when high temperature oxidation resistance is concerned. This is especially the case for refractory element-containing alloys where catastrophic oxidation at rather low temperatures can occur. This seems a particular challenge for alloy development as no predictive simulation capabilities and metallurgical mitigation strategies are available to systematically suppress critical oxidation behavior in complex alloys – while maintaining other relevant properties. The present article briefly reviews the possibilities to obtain known protective scales in relevant BCC superalloy systems. It concludes on the challenges that need to be addressed to empower novel BCC superalloys to provide protection against high temperature oxidation.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"267 ","pages":"Article 116784"},"PeriodicalIF":5.3000,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Scripta Materialia","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359646225002477","RegionNum":2,"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
Materials from the class of metallic-intermetallic, body-centered cubic (BCC) superalloys with microstructures composed of A2, B2 and L21 phases are candidates for high temperature application due to high solidus/solvus temperatures and the expectedly good creep resistance. However, experience with their base systems indicates substantial problems that need to be tackled when high temperature oxidation resistance is concerned. This is especially the case for refractory element-containing alloys where catastrophic oxidation at rather low temperatures can occur. This seems a particular challenge for alloy development as no predictive simulation capabilities and metallurgical mitigation strategies are available to systematically suppress critical oxidation behavior in complex alloys – while maintaining other relevant properties. The present article briefly reviews the possibilities to obtain known protective scales in relevant BCC superalloy systems. It concludes on the challenges that need to be addressed to empower novel BCC superalloys to provide protection against high temperature oxidation.
期刊介绍:
Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.