{"title":"Differentiated fracture behaviors of a spray-formed Al-Cu-Li alloy under various heat treatments at liquid nitrogen temperature","authors":"Shiyi Wen , Wangjun Cheng , Yue Zhao , Yaoning Sun","doi":"10.1016/j.cryogenics.2025.104049","DOIUrl":null,"url":null,"abstract":"<div><div>An experimental study was conducted on the tensile and fracture behaviors of a spray-formed Al-Cu-Li alloy at liquid nitrogen (LN<sub>2</sub>) temperature. The mechanical properties and fracture morphology of the spray-formed, solution-treated and aged Al-Cu-Li alloy sheets at ambient temperature (AT) and −196 °C were discussed in detail. The tensile fracture behaviors at low temperature were revealed. It is illustrated that the stress gradient and limit strain at −196 °C are relatively larger due to a significant strengthening and plasticizing effect. The solution-treated and aged alloys present a large resistance to the plastic deformation and fracture at LN<sub>2</sub> temperature. The ductility of the aged alloy is insensitive to the LN<sub>2</sub> temperature. Compared to the aged alloy, the solution-treated alloy is more favorable for the forming and manufacture of complex-shaped Al-Cu-Li alloy components at low temperature of LN<sub>2</sub>.</div></div>","PeriodicalId":10812,"journal":{"name":"Cryogenics","volume":"147 ","pages":"Article 104049"},"PeriodicalIF":1.8000,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cryogenics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S001122752500027X","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
An experimental study was conducted on the tensile and fracture behaviors of a spray-formed Al-Cu-Li alloy at liquid nitrogen (LN2) temperature. The mechanical properties and fracture morphology of the spray-formed, solution-treated and aged Al-Cu-Li alloy sheets at ambient temperature (AT) and −196 °C were discussed in detail. The tensile fracture behaviors at low temperature were revealed. It is illustrated that the stress gradient and limit strain at −196 °C are relatively larger due to a significant strengthening and plasticizing effect. The solution-treated and aged alloys present a large resistance to the plastic deformation and fracture at LN2 temperature. The ductility of the aged alloy is insensitive to the LN2 temperature. Compared to the aged alloy, the solution-treated alloy is more favorable for the forming and manufacture of complex-shaped Al-Cu-Li alloy components at low temperature of LN2.
期刊介绍：
Cryogenics is the world''s leading journal focusing on all aspects of cryoengineering and cryogenics. Papers published in Cryogenics cover a wide variety of subjects in low temperature engineering and research. Among the areas covered are:
- Applications of superconductivity: magnets, electronics, devices
- Superconductors and their properties
- Properties of materials: metals, alloys, composites, polymers, insulations
- New applications of cryogenic technology to processes, devices, machinery
- Refrigeration and liquefaction technology
- Thermodynamics
- Fluid properties and fluid mechanics
- Heat transfer
- Thermometry and measurement science
- Cryogenics in medicine
- Cryoelectronics
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