Picture of boy being examining by doctor at a tuberculosis sanatorium

Understanding our future through Open Access research about our past...

Strathprints makes available scholarly Open Access content by researchers in the Centre for the Social History of Health & Healthcare (CSHHH), based within the School of Humanities, and considered Scotland's leading centre for the history of health and medicine.

Research at CSHHH explores the modern world since 1800 in locations as diverse as the UK, Asia, Africa, North America, and Europe. Areas of specialism include contraception and sexuality; family health and medical services; occupational health and medicine; disability; the history of psychiatry; conflict and warfare; and, drugs, pharmaceuticals and intoxicants.

Explore the Open Access research of the Centre for the Social History of Health and Healthcare. Or explore all of Strathclyde's Open Access research...

Image: Heart of England NHS Foundation Trust. Wellcome Collection - CC-BY.

Microstructure and residual stress in Ti-6l-4V parts made by different additive manufacturing techniques

Konkova, T. N. and Rahimi, S. and Blackwell, P. L. (2017) Microstructure and residual stress in Ti-6l-4V parts made by different additive manufacturing techniques. In: Strath Wide Researcher Conference 2017, 2017-05-30 - 2017-05-30, Strathclyde.

[img]
Preview
Text (Konkova-etal-SW-2017-Microstructure-and-residual-stress-in-Ti-6l-4V-parts-made-by-different-additive-manufacturing-techniques)
Konkova_etal_SW_2017_Microstructure_and_residual_stress_in_Ti_6l_4V_parts_made_by_different_additive_manufacturing_techniques.pdf
Accepted Author Manuscript

Download (1MB) | Preview

Abstract

Additive manufacturing (AM) or additive layer manufacturing, direct digital manufacturing and 3D printing, is rapidly growing as an advanced manufacturing technology. Powder bed fusion (PBF) and directed energy deposition (DPD) are two main groups of AM techniques available at present. The material’s mechanical properties, residual stress level and surface quality are the major limitations preventing the uptake of the technology to produce components for demanding engineering applications. The objective of this study is to obtain more in-depth knowledge of microstructure and residual stress developments in Ti-6Al-4V cylindrical parts made by different AM techniques, and compare the results with parts made through traditional manufacturing practices. For this purpose, direct comparisons are made between the materials made by AM techniques and those made by a forging process route. Five different components of the same material made through different manufacturing routes, including traditional forging and AM methods: electron beam melting (EBM), direct metal laser sintering (DMLS), and laser metal deposition (LMD), were analysed. These include microstructure characterisation and residual stress measurements by x-ray diffraction (XRD) and a hole-drilling technique based on electronic speckle pattern interferometry (ESPI). The material produced by AM techniques was compared with the mill-annealed condition of conventionally forged material.