Application of bulk deformation methods for microstructural and material property improvement and residual stress and distortion control in additively manufactured components

By Paul A. Colegrove, J. Donoghue, Filomeno Martina, Jianglong Gu, P. Prangnell, J. Hönnige. 2017

202 citations recorded by the source corpus.

Abstract Many additively manufactured (AM) materials have properties that are inferior to their wrought counterparts, which impedes industrial implementation of the technology. Bulk deformation methods, such as rolling, applied in-process during AM can provide significant benefits including reducing residual stresses and distortion, and grain refinement. The latter is particularly beneficial for titanium alloys where the normally seen large prior β grains are converted to a fine equiaxed structure – giving isotropic mechanical properties that can be better than the wrought material. The technique is also beneficial for aluminium alloys where it enables a dramatic reduction in porosity and improved ductility.

Subfields: Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/597849629b0894185c96e3f1d9104f27c7cda4c2

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In Materials Chemistry

In Mechanical Engineering

Citations in the corpus

The Current State of Research of Wire Arc Additive Manufacturing (WAAM): A Review (2021, background): “stated that rolling processes with the prevention of lateral deformation have the greatest influence on the residual stresses and have been applied for titanium-based alloys and aluminumbased alloys successfully [101].”
Advances in Metal Additive Manufacturing: A Review of Common Processes, Industrial Applications, and Current Challenges (2021, methodology): “Post processing approaches: (a) Laser Polishing mechanism [155] and (b) Common cold rolling processes [154].”
Control of residual stress and distortion in aluminium wire + arc additive manufacture with rolling (2018, background): “Inter-pass rolling has been found not only to modify the internal stresses in WAAM, but also the microstructure [12], [41], [42].”
Residual stress and texture control in Ti-6Al-4V wire + arc additively manufactured intersections by stress relief and rolling (2018, background): “Both stress-relieved specimens (Figure 12 c and d) are virtually stress-free, as they range between -32 MPa and 20 MPa.”
Current Status and Perspectives on Wire and Arc Additive Manufacturing (WAAM) (2019, background): “Inter-layer rolling decreases porosity size and quantity with increasing rolling load, which has been claimed as the reason f r the ductility increase of WAAM-rolled aluminum alloys [24].”
Deformation microstructures and strengthening mechanisms for the wire+arc additively manufactured Al-Mg4.5Mn alloy with inter-layer rolling (2018, background): “[9] pointed out that one important aspect that is often overlooked for AM parts is that the strength is normally significantly less than that of”
Metal additive manufacturing in the commercial aviation industry: A review (2019, methodology): “made some experimental tests using two different types of roller [150]: one profiled with a 3.”
A review of wire arc additive manufacturing and advances in wire arc additive manufacturing of aluminium (2018, background): “[47] • Microstructure Titanium (Ti-6Al-4 V) Szost et al.”
An overview of wire arc additive manufacturing (WAAM) in shipbuilding industry (2020, methodology): “Titanium alloys that used in shipbuilding and welding aluminium alloy wires processable by WAAM (Martina et al. 2013; Wang et al. 2013; Martina 2014; Colegrove et al. 2017; Derekar 2018; Li et al. 2019; Rodrigues et al. 2019).”