Effects of Heat Treatment on the Microstructure and Properties of Graded-Density Powder Aluminum Alloys

Liu, Chao; Liu, Yang; Wang, Tao; Liu, Wensheng; Ma, Yunzhu

doi:10.1007/s11041-022-00734-9

Cited by 5 publications

(1 citation statement)

References 23 publications

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“…However, titanium alloy has high activity, low thermal conductivity, and high deformation resistance [4][5][6][7], which makes it very difficult to manufacture by traditional manufacturing methods, such as casting [8,9], forging [10,11], and welding [12][13][14]. In addition, aerospace parts tend to be functional, lightweight, and have a structural integrated design [15][16][17][18][19][20][21][22][23]. Meanwhile, it is increasingly difficult for traditional manufacturing technology to meet the manufacturing needs of aerospace titanium alloy parts with complex structures.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Parameters in Laser Powder Bed Fusion TA15 Titanium Alloy Using Taguchi Method

Liu

Wang

et al. 2022

Crystals

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In this work, laser powder bed fusion (LPBF) was explored to fabricate TA15 (Ti-6Al-2Zr-1Mo-1V) titanium alloy based on the experimental design obtained by using the Taguchi method. The impact of processing parameters (including laser power, scanning speed, and scanning interval) on the density and microhardness of the as-LPBFed TA15 titanium alloy was analyzed using the Taguchi method and analysis of variance (ANOVA). The interaction among parameters on the density of the as-LPBFed TA15 titanium alloy was indicated by a response surface graph (RSR). When the laser energy density was adjusted to 100 J/mm3, the highest relative density could reach 99.7%. The further increase in the energy input led to the reduction in relative density, due to the formation of tiny holes caused by the vaporization of material at a high absorption of heat. Furthermore, in order to better reveal the correlation between relative density and processing parameters, the regression analysis was carried out for relative density. The results showed that the experimental and predicted values obtained by the regression equation were nearly the same.

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