High Temperature Mechanical Properties and Microstructures of Thermally Stabilized Fe-Based Alloys Synthesized by Mechanical Alloying Followed by Hot Extrusion
Küçük Resim Yok
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Korean Inst Metals Materials
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The key requirement to consolidate high-energy mechanically alloyed nanocrystalline powders is to achieve densification and particle bonding without impairment in the mechanical properties. Recent demonstrations of consolidation methods involving high shear, pressure and temperature have shown promising results for bonding high strength particulate materials produced by mechanical alloying. In this study, we report the ability of multi-pass high temperature equal channel angular extrusion to produce bulk ferritic alloys from nanocrystalline Fe-Ni-Zr powders. Subsequent microstructural characterizations indicate limited grain growth as the average grain sizes remain smaller than 100 nm after processing temperatures of 600 degrees C and 700 degrees C, above which grains reach micron sizes. The compression test results reveal that the alloys exhibit high mechanical strength at room and moderately high temperatures compared to the pure Fe and Fe-Ni alloys without Zr addition. Graphic
Açıklama
Anahtar Kelimeler
Equal Channel Angular Extrusion (Ecae), High Temperature Mechanical Properties, Mechanical Alloying, Grain Growth, Microstructural Evolution, Steel
Kaynak
Metals And Materials International
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
27
Sayı
6
