Application of bulk deformation methods for microstructural and material property improvement and residual stress and distortion control in additively manufactured components
Application of bulk deformation methods for microstructural and material property improvement and residual stress and distortion control in additively manufactured components
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DOI：
10.1016/j.scriptamat.2016.10.031
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发表时间：
2017-07-01
影响因子：
6
通讯作者：
Honnige, Jan
中科院分区：
文献类型：
--
作者：
Colegrove, Paul A.;Donoghue, Jack;Honnige, Jan
许多增材制造（AM）材料的性能不如其锻造对应物，这阻碍了该技术的工业实施。在AM期间在过程中应用的本体变形方法（诸如乳制）可以提供显著的益处，包括减少残余应力和变形以及晶粒细化。后者对钛合金特别有利，其中通常看到的大的先前晶粒转化为细的等轴结构，从而提供比锻造材料更好的各向同性机械性能。该技术对铝合金也是有益的，其中它能够显著降低孔隙率并改善延展性。(C)2016作者由Elsevier Ltd代表Acta Materialia Inc.出版。
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 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. (C) 2016 The Authors. Published by Elsevier Ltd on behalf of Acta Materialia Inc.