The Effects of LENS Process Parameters on the Behaviour of 17-4 PH Stainless Steel

I. Mathoho*, E. T. Akinlabi, N. Arthur, M. Tlotleng, N. W. Makoana

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)


17-4 PH stainless steel has proven to be one of the workhorse materials in industries such as aerospace, chemical, and energy. The attraction of this alloy to the aforementioned industries is derived from the fact that 17-4 PH stainless steel possesses a combination of excellent mechanical properties and corrosion resistance. Manufacturing of 17-4 PH stainless steel through 3D printing will further inspire confidence in the aforementioned industries. The current study investigated the effects of LENS process parameters on porosity, microstructure, and microhardnesss. The scanning speed and powder feed rate were varied at 7.62 mm/s-12.7 mm/s and 4.70 g/min-5.98 g/min rpm, respectively, while laser power was kept constant at 300 W. The optimum scanning for both 4.70 g/min and 5.98 g/min was 10. 16 mm/s and 12.7 mm/s, respectively. The current study deduced that varying both scanning speed and powder feed rate had an impact on both the microstructure and microhardness.

Original languageEnglish
Title of host publicationTMS 2020 149th Annual Meeting and Exhibition Supplemental Proceedings
EditorsZhiwei Peng, Jiann-Yang Hwang, Jerome Downey, Dean Gregurek, Baojun Zhao, Onuralp Yucel, Ender Keskinkilic, Tao Jiang, Jesse White, Morsi Mahmoud
Place of PublicationCham, Switzerland
Number of pages10
ISBN (Electronic)9783030362966
ISBN (Print)9783030362959, 9783030362980
Publication statusPublished - 14 Feb 2020
Externally publishedYes
Event149th Annual Meeting and Exhibition of the Minerals, Metals and Materials Society, TMS 2020 - San Diego, United States
Duration: 23 Feb 202027 Feb 2020

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696


Conference149th Annual Meeting and Exhibition of the Minerals, Metals and Materials Society, TMS 2020
Country/TerritoryUnited States
CitySan Diego

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