| Title: |
Microstructural characterization of AISI 440C stainless tool steel fabricated by laser powder bed fusion |
| Authors: |
Pan, Z.; Zhang, Y; Defer, M.; Xiao, X.; Juul Jensen, D.; Nadimpalli, V. K. |
| Source: |
Pan , Z , Zhang , Y , Defer , M , Xiao , X , Juul Jensen , D & Nadimpalli , V K 2024 , ' Microstructural characterization of AISI 440C stainless tool steel fabricated by laser powder bed fusion ' , IOP Conference Series: Materials Science and Engineering , vol. 1310 , no. 1 , 012037 . https://doi.org/10.1088/1757-899X/1310/1/012037 |
| Publication Year: |
2024 |
| Collection: |
Technical University of Denmark: DTU Orbit / Danmarks Tekniske Universitet |
| Description: |
The microstructure of a stainless tool steel AISI 440C fabricated by laser powder bed fusion (L-PBF) without pre-heating of the build plate was characterized by multi-scale experimental methods. In combination with thermodynamic calculations, the solidification and cooling-down procedures were analyzed with the intention to understand the cracking behavior of high carbon tool steels processed by L-PBF. The results showed a fully austenitic structure in the as-built sample with sub-micro cellular structures and nano-sized carbides decorating the cell walls. Significant segregation exists merely at the intersection of cell walls while it is absent along high angle grain boundaries. Factors contributing to crack-free AISI 440C are discussed, providing guidelines for future L-PBF fabrication of high-carbon tool steels. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| DOI: |
10.1088/1757-899X/1310/1/012037 |
| Availability: |
https://orbit.dtu.dk/en/publications/a746bfe9-f859-43f1-a546-ed48e1b45c7a; https://doi.org/10.1088/1757-899X/1310/1/012037; https://backend.orbit.dtu.dk/ws/files/372046370/Pan_2024_IOP_Conf._Ser._Mater._Sci._Eng._1310_012037.pdf |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.CCDAB994 |
| Database: |
BASE |