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Author : E. S. Yakovleva
Release : 1954
Genre : Aluminum
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis The Role of Grain Boundaries in the Plastic Deformation of Aluminum by : E. S. Yakovleva
Download or read book The Role of Grain Boundaries in the Plastic Deformation of Aluminum written by E. S. Yakovleva. This book was released on 1954. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Douglas L. Swisher
Release : 2000-12-01
Genre :
Kind : eBook
Book Rating : 187/5 ( reviews)
Book Synopsis Production of Ultra-Fine Grains and Evolution of Grain Boundaries During Severe Plastic Deformation of Aluminum and Its Alloys by : Douglas L. Swisher
Download or read book Production of Ultra-Fine Grains and Evolution of Grain Boundaries During Severe Plastic Deformation of Aluminum and Its Alloys written by Douglas L. Swisher. This book was released on 2000-12-01. Available in PDF, EPUB and Kindle. Book excerpt: Equal channel-angular pressing (ECAP) is a recently developed method for deformation processing of material that can produce an ultra-fine grain structure in bulk material through severe plastic deformation. This study will present results on micro structural evolution during repetitive ECAP of pure aluminum. The principal method of data collection was Orientation Imaging Microscopy (OIM). The results of the study indicate that, after one ECAP pass, the structure is inhomogeneous and anisotropic, and consists mostly of deformation-induced features. After repetitive ECAP, the aluminum material exhibited a homogeneous grain size but retained an anisotropic character to the microstructure. After twelve ECAP passes the microstructure consisted mainly of fine grains surrounded by high-angle boundaries but an appreciable fraction of low-angle boundaries remained. This microstructure thus comprises a mixture of deformation-induced and recrystallization features. Further results were also obtained documenting the existence of deformation banding in this material as well as in a rolled aluminum alloy. This phenomenon may be general in nature and associated with severe plastic deformation in aluminum and its alloys.
Author : Diana Avadanii
Release : 2022
Genre :
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis The Role of Grain Boundaries in Plastic Deformation by : Diana Avadanii
Download or read book The Role of Grain Boundaries in Plastic Deformation written by Diana Avadanii. This book was released on 2022. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Edward McMahon
Release : 1996-12-01
Genre :
Kind : eBook
Book Rating : 730/5 ( reviews)
Book Synopsis Grain Boundary Development in Superplastic Aluminum Alloys by : Michael Edward McMahon
Download or read book Grain Boundary Development in Superplastic Aluminum Alloys written by Michael Edward McMahon. This book was released on 1996-12-01. Available in PDF, EPUB and Kindle. Book excerpt: Superplasticity may be defined as the capability of certain polycrystalline materials to deform to extensive plastic elongations prior to failure, often without formation of a neck. Typically, superplasticity refers to tensile elongations greater than 200%, although some elongations have been reported in excess of 5000% Ref 1. While it has been suggested that bronze metals in use in ancient civilizations may have possessed superplastic properties Ref 2, most historical reviews credit the modern-day documentation of superplastic behavior to a paper published in the Journal of the Institute of Metals by G.D. Bengough in 1912 which described extensive elongations in brass Ref 3. Recognition of a stress and strain-rate relationship was first presented qualitatively in a paper by Rosenhain in 1920 which examined a near eutectic Zn- Al-Cu alloy Ref 4. Photomicrographs detailing superplastic grain structures in eutectic Sn-Pb and Bi-Pb alloys deformed to elongations of 2000% were presented in 1934 by Pearson Ref 5. This study was the first to identify an equiaxed grain morphology in the deformed regions and suggest that grain boundary migration may be involved in the deformation processes.
Author : W. Wurth Kriegel
Release : 1966
Genre : Technology & Engineering
Kind : eBook
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Book Synopsis The Role of Grain Boundaries and Surfaces in Ceramics by : W. Wurth Kriegel
Download or read book The Role of Grain Boundaries and Surfaces in Ceramics written by W. Wurth Kriegel. This book was released on 1966. Available in PDF, EPUB and Kindle. Book excerpt:
