Neutron diffraction residual stress determinations in titanium aluminide component fabricated using the twin wire-arc additive manufacturing

Shen Chen; Ma Yan; Reid MarkPan ZengxiHua XuemingCuiuri DominicParadowska AnnaWang LinLi Huijun

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Neutron diffraction residual stress determinations in titanium aluminide component fabricated using the twin wire-arc additive manufacturing

机译：Neutron diffraction residual stress determinations in titanium aluminide component fabricated using the twin wire-arc additive manufacturing

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In recent years, twin wire-arc additive manufacturing (T-WAAM) technique has been considered as a promising method of fabricating and shaping titanium aluminide components with high efficiency and low cost. However, excessive thermal input of the non-consumable tungsten electrode arc deposition induces significant residual stresses in the buildup component, thus accurate measurement of residual stresses is necessary for T-WAAM buildup part quality assessment. In the present research, non-destructive neutron diffraction residual stresses measurements on as-fabricated and heat-treated T-WAAM produced Ti-48Al titanium aluminide components are performed. To exclude the influence of initial large T-WAAM residual stresses on d 0 hkl sample alignment, different d 0 hkl sample dimensions are designed: one is normal thin slice and the other is the meshed sample. According to the obtained results, the conducted post-production heat treatment has partially released initial residual stresses. Also, the meshed design of d 0 hkl sample shows better measurement accuracy than the simple sliced d 0 hkl sample. In addition, T-WAAM fabricated titanium aluminide wall component performs featured tensile-compressive alternating residual stress distribution induced by the layer-by-layer arc deposition.

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《Journal of manufacturing processes》 |2022年第2期|141-150|共10页
作者
Shen Chen; Ma Yan; Reid MarkPan ZengxiHua XuemingCuiuri DominicParadowska AnnaWang LinLi Huijun;
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Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200240, Peoples R China|Univ Wollongong, Fac Engn & Informat Sci, Sch Mech Mat & Mechatron Engn, Wollongong, NSW 2522, Australia;

Univ Wollongong, Fac Engn & Informat Sci, Sch Mech Mat & Mechatron Engn, Wollongong, NSW 2522, Australia;

Australian Nucl Sci & Technol Org, Australian Ctr Neutron Scattering, Lucas Heights, NSW 2234, AustraliaShanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200240, Peoples R China;

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正文语种英语
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关键词
Additive manufacturing; Residual stress; Neutron diffraction;

Neutron diffraction residual stress determinations in titanium aluminide component fabricated using the twin wire-arc additive manufacturing

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