Viscoplastic Model Development to Account for Strength Differential: Application to Aged Inconel 718 at Elevated Temperature PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Viscoplastic Model Development to Account for Strength Differential: Application to Aged Inconel 718 at Elevated Temperature PDF full book. Access full book title Viscoplastic Model Development to Account for Strength Differential: Application to Aged Inconel 718 at Elevated Temperature by . Download full books in PDF and EPUB format.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 206
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 206
Get Book Here
Book Description
Author:
Publisher: DIANE Publishing
ISBN: 1428918205
Category :
Languages : en
Pages : 274
Get Book Here
Book Description
Author: Jacek J. Skrzypek
Publisher: Springer
ISBN: 3319171607
Category : Technology & Engineering
Languages : en
Pages : 328
Get Book Here
Book Description
The book is focused on constitutive description of mechanical behaviour of engineering materials: both conventional (polycrystalline homogeneous isotropic or anisotropic metallic materials) and non-conventional (heterogeneous multicomponent anisotropic composite materials). Effective material properties at the macro-level depend on both the material microstructure (originally isotropic or anisotropic) as well as dissipative phenomena occurred on fabrication and consecutive loading phase (hardening) resulting in irreversible microstructure changes (acquired anisotropy). The material symmetry is a background and anisotropy is a core around which the book is formed. In this way a revision of classical rules of enhanced constitutive description of materials is required.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 276
Get Book Here
Book Description
Author:
Publisher: DIANE Publishing
ISBN: 1428918248
Category :
Languages : en
Pages : 203
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 818
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 166
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 816
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 110
Get Book Here
Book Description
Author: Dunyong Deng
Publisher: Linköping University Electronic Press
ISBN: 9176853837
Category :
Languages : en
Pages : 69
Get Book Here
Book Description
Additive manufacturing (AM), also known as 3D printing, has gained significant interest in aerospace, energy, automotive and medical industries due to its capabilities of manufacturing components that are either prohibitively costly or impossible to manufacture by conventional processes. Among the various additive manufacturing processes for metallic components, electron beam melting (EBM) and selective laser melting (SLM) are two of the most widely used powder bed based processes, and have shown great potential for manufacturing high-end critical components, such as turbine blades and customized medical implants. The futures of the EBM and SLM are doubtlessly promising, but to fully realize their potentials there are still many challenges to overcome. Inconel 718 (IN718) is a nickel-base superalloy and has impressive combination of good mechanical properties and low cost. Though IN718 is being mostly used as a turbine disk material now, the initial introduction of IN718 was to overcome the poor weldability of superalloys in 1960s, since sluggish precipitation of strengthening phases ?’/?’’ enables good resistance to strain-age cracking during welding or post weld heat treatment. Given the similarity between AM and welding processes, IN718 has been widely applied to the metallic AM field to facilitate the understandings of process-microstructure-property relationships. The work presented in this licentiate thesis aims to better understand microstructures and mechanical properties EBM and SLM IN718, which have not been systematically investigated. Microstructures of EBM and SLM IN718 have been characterized with scanning electron microscopy (SEM), transmission electron microscopy (TEM) and correlated with the process conditions. Monotonic mechanical properties (e.g., Vickers microhardness and tensile properties) have also been measured and rationalized with regards to the microstructure evolutions before and after heat treatments. For EBM IN718, the results show the microstructure is not homogeneous but dependant on the location in the components, and the anisotropic mechanical properties are probably attributed to alignment of porosities rather than texture. Post heat treatment can slightly increase the mechanical strength compared to the as-manufactured condition but does not alter the anisotropy. SLM IN718 shows significantly different microstructure and mechanical properties to EBM IN718. The as-manufactured SLM IN718 has very fine dendritic microstructure and Laves phases in the interdendrites, and is “work-hardened” by the residual strains and dislocations present in the material. Mechanical properties are different between horizontally and vertically built samples, and heat treatment can minimize this difference. Results from this licentiate thesis provide the basis for the further research on the cyclic mechanical properties of EBM and SLM IN718, which would be the focus of following phase of the Ph.D. research.
