Abstract
This work aims to evaluate the impact of small amounts of hydrogen on the hydrogen-assisted cracking (HAC) of 17-4 martensitic stainless steel (SS) prepared by additive manufacturing (AM). To elucidate the effect of processing on the hydrogen–material interactions, the obtained results were compared with a conventionally manufactured (CM) counterpart. It was found that the hydrogen uptake of AM 17-4 SS is higher compared to CM; however, its resistance to HAC is improved. These differences are attributed to the presence of stronger hydrogen trapping sites, retained austenite and the absence of Nb-rich precipitates in the AM 17-4 SS. The effect of processing on the microstructure and the susceptibility to hydrogen-induced damage and hydrogen embrittlement is discussed in detail.
| Original language | English |
|---|---|
| Pages (from-to) | 1319-1330 |
| Number of pages | 12 |
| Journal | Progress in Additive Manufacturing |
| Volume | 9 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1 Oct 2024 |
Keywords
- 17-4 PH stainless steel
- Additive manufacturing
- Hydrogen embrittlement
- Hydrogen trapping
- Thermal desorption spectroscopy
ASJC Scopus subject areas
- Industrial and Manufacturing Engineering
