Journal ArticleDOI
Review on the Correlation Between Microstructure and Mechanical Performance for Laser Powder Bed Fusion AlSi10Mg
Lv Zhao,Lu Song,Juan Guillermo Santos Macias,Yaxin Zhu,Minsheng Huang,Aude Simar,Zhenhuan Li +6 more
TLDR
In this paper , the authors summarize the recent progresses on the characterization of microstructure, assessment of strengthening and damage mechanisms, evaluation of fracture and fatigue resistance, and attempts to build a primary comprehensive link between mechanical performance and micro-structure for the as built state.Abstract:
As important structural materials widely used in aerospace and automotive industries, aluminum alloys are perfect candidates for development of laser metal additive manufacturing (AM). Amongst AM aluminum alloys, laser powder bed fusion (LPBF) AlSi10Mg has received substantial attention due to its good printability and relatively low cost. Great efforts have been devoted to seek optimum process parameters that can enhance mechanical performance. However, a large scattering of material properties arises from the literature data, especially for the as built state, thus casting a shadow over further development of LPBF Al alloys. This review article aims to summarize the recent progresses on the characterization of microstructure, assessment of strengthening and damage mechanisms, evaluation of fracture and fatigue resistance, and attempts to build a primary comprehensive link between mechanical performance and microstructure for the as built state. Following the analysis of the state of the art, the review will finally provide an outlook on additional efforts needed to quantify the microstructure-property relation, based on which maximizing the potential of mechanical performance through optimizing microstructure may be achieved. read more
Citations
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Journal ArticleDOI
Heterogeneous slip localization in an additively manufactured 316L stainless steel
C.E. Bean,F. Wang,Marie-Agathe Charpagne,Patrick Villechaise,Valéry Valle,Sean R. Agnew,Daniel Gianola,Tresa M. Pollock,Jean Charles Stinville +8 more
TL;DR: In this paper , the plastic localization involved during monotonic deformation of conventional and additive manufactured 316L stainless steels using high-resolution digital image correlation was investigated, and significant heterogeneous slip localization was observed in the additively manufactured 316 l Stainless steels.
Journal ArticleDOI
Influence of Microstructure on Fracture Mechanisms of the Heat-Treated AlSi10Mg Alloy Produced by Laser-Based Powder Bed Fusion
G. Di Egidio,Carla Martini,Johan Börjesson,Ehsan Ghassemali,Lorella Ceschini,Alessandro Morri +5 more
TL;DR: In this article , the fracture mechanisms of the L-PBF AlSi10Mg alloy in as-built (AB) condition and after three different heat treatments (T5 (4 h at 160 °C), standard T6 (T6B) (1 h at 540 °C followed by 4h at 160°C), and rapid T6(T6R) (10 min at 510 °C, followed by 6 h at160 °C)).
Journal ArticleDOI
Room- and High-Temperature Fatigue Strength of the T5 and Rapid T6 Heat-Treated AlSi10Mg Alloy Produced by Laser-Based Powder Bed Fusion
TL;DR: In this paper , the performance of the L-PBF AlSi10Mg alloy was analyzed under room and high-temperature (200 °C) conditions, and the results showed that the T6R alloy is characterized by higher fatigue strength at room (108 MPa) and high temperatures (92 MPa), compared to the T5 alloy (92 and 78 MPa).
Journal ArticleDOI
On microstructure and work hardening behavior of laser powder bed fused Al-Cu-Mg-Ag-TiB2 and AlSi10Mg alloys
Maryam Avateffazeli,Shawkat Imam Shakil,Amir Hadadzadeh,Babak Shalchi-Amirkhiz,Hadi Pirgazi,Mohammadreza Mohammadi,Meysam Haghshenas +6 more
TL;DR: In this paper , the correlation between microstructure and mechanical properties, including work hardening rates of two aluminum alloys, Al-Cu-Mg-Ag-TiB2 (A205) and AlSi10Mg, both additively manufactured using laser powder-bed fusion (LPBF) technique were investigated.
Journal ArticleDOI
Ongoing Challenges of Laser-Based Powder Bed Fusion Processing of Al Alloys and Potential Solutions from the Literature—A Review
TL;DR: In this article , the authors explore all the challenges encountered before, during and after the PBF-LB/M processing of Al-based alloys, in order to critically analyse the solutions proposed in the literature and suggest new approaches for addressing unsolved problems.
References
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Journal ArticleDOI
Continuum Theory of Ductile Rupture by Void Nucleation and Growth: Part I—Yield Criteria and Flow Rules for Porous Ductile Media
Journal ArticleDOI
Additive manufacturing of metallic components – Process, structure and properties
Tarasankar Debroy,Huiliang Wei,J.S. Zuback,T. Mukherjee,John W. Elmer,John O. Milewski,Allison M. Beese,Alexander E. Wilson-Heid,Amitava De,Wei Zhang +9 more
TL;DR: A review of the emerging research on additive manufacturing of metallic materials is provided in this article, which provides a comprehensive overview of the physical processes and the underlying science of metallurgical structure and properties of the deposited parts.
Journal ArticleDOI
Analysis of the cup-cone fracture in a round tensile bar
Viggo Tvergaard,Alan Needleman +1 more
TL;DR: In this article, a set of elastic-plastic constitutive relations that account for the nucleation and growth of micro-voids is used to model the failure of a round tensile test specimen.
Journal ArticleDOI
Laser additive manufacturing of metallic components: materials, processes and mechanisms
TL;DR: Additive manufacturing implies layer by layer shaping and consolidation of powder feedstock to arbitrary configurations, normally using a computer controlled laser as discussed by the authors, which is based on a novel materials incremental manufacturing philosophy.
Journal ArticleDOI
The conflicts between strength and toughness
TL;DR: This work focuses on the interplay between the mechanisms that individually contribute to strength and toughness, noting that these phenomena can originate from very different lengthscales in a material's structural architecture.