Matches in SemOpenAlex for { <https://semopenalex.org/work/W3100896630> ?p ?o ?g. }
- W3100896630 endingPage "1522" @default.
- W3100896630 startingPage "1522" @default.
- W3100896630 abstract "Laser powder bed fusion has been widely investigated for shape memory alloys, primarily NiTi alloys, with the goal of tailoring microstructures and producing complex geometries. However, processing high temperature shape memory alloys (HTSMAs) remains unknown. In our previous study, we showed that it is possible to manufacture NiTiHf HTSMA, as one of the most viable alloys in the aerospace industry, using SLM and investigated the effect of parameters on defect formation. The current study elucidates the effect of process parameters (PPs) on the functionality of this alloy. Shape memory properties and the microstructure of additively manufactured Ni-rich NiTiHf alloys were characterized across a wide range of PPs (laser power, scanning speed, and hatch spacing) and correlated with energy density. The optimum laser parameters for defect-free and functional samples were found to be in the range of approximately 60–100 J/mm3. Below an energy density of 60 J/mm3, porosity formation due to lack-of-fusion is the limiting factor. Samples fabricated with energy densities of 60–100 J/mm3 showed comparable thermomechanical behavior in comparison with the starting as-cast material, and samples fabricated with higher energy densities (>100 J/mm3) showed very high transformation temperatures but poor thermomechanical behavior. Poor properties for samples with higher energies were mainly attributed to the excessive Ni loss and resultant change in the chemical composition of the matrix, as well as the formation of cracks and porosities. Although energy density was found to be an important factor, the outcome of this study suggests that each of the PPs should be selected carefully. A maximum actuation strain of 1.67% at 400 MPa was obtained for the sample with power, scan speed, and hatch space of 100 W, 400 mm/s, and 140 µm, respectively, while 1.5% actuation strain was obtained for the starting as-cast ingot. These results can serve as a guideline for future studies on optimizing PPs for fabricating functional HTSMAs." @default.
- W3100896630 created "2020-11-23" @default.
- W3100896630 creator A5019602067 @default.
- W3100896630 creator A5023940635 @default.
- W3100896630 creator A5037109084 @default.
- W3100896630 creator A5041038716 @default.
- W3100896630 creator A5060257151 @default.
- W3100896630 creator A5070676100 @default.
- W3100896630 creator A5075286558 @default.
- W3100896630 creator A5080063719 @default.
- W3100896630 creator A5091747829 @default.
- W3100896630 date "2020-11-17" @default.
- W3100896630 modified "2023-10-16" @default.
- W3100896630 title "Laser Powder Bed Fusion of NiTiHf High-Temperature Shape Memory Alloy: Effect of Process Parameters on the Thermomechanical Behavior" @default.
- W3100896630 cites W1483017121 @default.
- W3100896630 cites W1984367625 @default.
- W3100896630 cites W2002098946 @default.
- W3100896630 cites W2013075309 @default.
- W3100896630 cites W2022436737 @default.
- W3100896630 cites W2023381719 @default.
- W3100896630 cites W2025248774 @default.
- W3100896630 cites W2030832292 @default.
- W3100896630 cites W2032688223 @default.
- W3100896630 cites W2035461355 @default.
- W3100896630 cites W2044384679 @default.
- W3100896630 cites W2071276866 @default.
- W3100896630 cites W2072455331 @default.
- W3100896630 cites W2078199579 @default.
- W3100896630 cites W2082434484 @default.
- W3100896630 cites W2082725069 @default.
- W3100896630 cites W2084151324 @default.
- W3100896630 cites W2086723879 @default.
- W3100896630 cites W2095042667 @default.
- W3100896630 cites W2112485956 @default.
- W3100896630 cites W2119036084 @default.
- W3100896630 cites W2144124496 @default.
- W3100896630 cites W2157561594 @default.
- W3100896630 cites W2163436061 @default.
- W3100896630 cites W2164981688 @default.
- W3100896630 cites W2329884059 @default.
- W3100896630 cites W2409931141 @default.
- W3100896630 cites W2462944400 @default.
- W3100896630 cites W2495471419 @default.
- W3100896630 cites W2518533172 @default.
- W3100896630 cites W2530030987 @default.
- W3100896630 cites W2581520628 @default.
- W3100896630 cites W2735693330 @default.
- W3100896630 cites W2762367303 @default.
- W3100896630 cites W2766369001 @default.
- W3100896630 cites W2766901392 @default.
- W3100896630 cites W2770903585 @default.
- W3100896630 cites W2771893925 @default.
- W3100896630 cites W2772308902 @default.
- W3100896630 cites W2781500149 @default.
- W3100896630 cites W2792390777 @default.
- W3100896630 cites W2793997370 @default.
- W3100896630 cites W2806810455 @default.
- W3100896630 cites W2864032719 @default.
- W3100896630 cites W2905094910 @default.
- W3100896630 cites W2912021899 @default.
- W3100896630 cites W2912377306 @default.
- W3100896630 cites W2917515850 @default.
- W3100896630 cites W2917573274 @default.
- W3100896630 cites W2923713154 @default.
- W3100896630 cites W2933807090 @default.
- W3100896630 cites W2943389074 @default.
- W3100896630 cites W2945942064 @default.
- W3100896630 cites W2945981994 @default.
- W3100896630 cites W2973529248 @default.
- W3100896630 cites W2973894332 @default.
- W3100896630 cites W2983919518 @default.
- W3100896630 cites W2990957392 @default.
- W3100896630 cites W2991566591 @default.
- W3100896630 cites W2995825998 @default.
- W3100896630 cites W2996754753 @default.
- W3100896630 cites W2998281950 @default.
- W3100896630 cites W3004675748 @default.
- W3100896630 cites W3087572284 @default.
- W3100896630 cites W3093145529 @default.
- W3100896630 doi "https://doi.org/10.3390/met10111522" @default.
- W3100896630 hasPublicationYear "2020" @default.
- W3100896630 type Work @default.
- W3100896630 sameAs 3100896630 @default.
- W3100896630 citedByCount "8" @default.
- W3100896630 countsByYear W31008966302021 @default.
- W3100896630 countsByYear W31008966302022 @default.
- W3100896630 countsByYear W31008966302023 @default.
- W3100896630 crossrefType "journal-article" @default.
- W3100896630 hasAuthorship W3100896630A5019602067 @default.
- W3100896630 hasAuthorship W3100896630A5023940635 @default.
- W3100896630 hasAuthorship W3100896630A5037109084 @default.
- W3100896630 hasAuthorship W3100896630A5041038716 @default.
- W3100896630 hasAuthorship W3100896630A5060257151 @default.
- W3100896630 hasAuthorship W3100896630A5070676100 @default.
- W3100896630 hasAuthorship W3100896630A5075286558 @default.
- W3100896630 hasAuthorship W3100896630A5080063719 @default.
- W3100896630 hasAuthorship W3100896630A5091747829 @default.
- W3100896630 hasBestOaLocation W31008966301 @default.