US 12,465,999 B2
Wear-resistant iron-based alloy compositions comprising chromium
Barbara Maroli, Höganäs (SE); Robert Frykholm, Ödåkra (SE); Sven Bengtsson, Höganäs (SE); and Karin Frisk, Enebyberg (SE)
Assigned to HÖGANÄS AB (PUBL), Höganäs (SE)
Filed by Höganäs AB (Publ), Höganäs (SE)
Filed on May 23, 2022, as Appl. No. 17/751,145.
Application 17/751,145 is a continuation of application No. 17/257,041, granted, now 11,370,198, previously published as PCT/EP2019/066838, filed on Jun. 25, 2019.
Claims priority of application No. 18181105 (EP), filed on Jul. 2, 2018.
Prior Publication US 2023/0091911 A1, Mar. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B23K 10/02 (2006.01); B22F 1/05 (2022.01); B23K 26/34 (2014.01); B23K 35/30 (2006.01); B32B 15/01 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/54 (2006.01)
CPC B23K 10/027 (2013.01) [B22F 1/05 (2022.01); B23K 26/34 (2013.01); B23K 35/3053 (2013.01); B32B 15/011 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/54 (2013.01); B22F 2301/35 (2013.01); B22F 2304/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An iron-based alloy composition comprising:
boron (B): 1.6-2.4 wt. %;
carbon (C): 2.2-3.0 wt. %;
chromium (Cr): 3.5-5.0 wt. %;
manganese (Mn): below 0.8 wt. %;
molybdenum (Mo): 16.0-19.5 wt. %;
nickel (Ni): 1.0-2.0 wt. %;
silicon (Si): 0.2-2.0 wt. %;
vanadium (V): 10.8-13.2 wt. %;
and balanced with iron (Fe) and unavoidable impurities;
wherein the iron-based alloy composition is formed from a powder composition,
wherein the alloy has a microstructure comprising primary boride and eutectic matrix, wherein a ratio of an amount of primary boride by volume to an amount of eutectic matrix by volume is below 0.3.