公开(公告)号：US20220316430A1

公开(公告)日：2022-10-06

申请号：US17641941

申请日：2020-10-09

Applicant: OERLIKON METCO (US) INC.

Inventor： Dongmyoung LEE ,  Subramaniam RANGASWAMY

IPC: F02M26/11 ,  B23K35/30 ,  B23K1/00 ,  F02M26/29

Abstract: Iron-based braze filler alloys having unexpectedly narrow melting temperature ranges, low solidus and low liquidus temperatures, as determined by Differential Scanning calorimetry (DSC), while exhibiting high temperature corrosion resistance, good wetting, and spreading, without deleterious significant boride formation into the base metal, and that can be brazed below 1,100 C contains a) nickel in an amount of from 0% to 35% by weight, b) chromium in an amount of from 0% to 25% by weight, c) silicon in an amount of from 4% to 9% by weight, d) phosphorous in an amount of from 5% to 11% by weight, e) boron in an amount of from 0% to 1% by weight, and f) the balance being iron, the percentages of a) to f) adding up to 100% by weight. The braze filler alloys or metals have sufficient high temperature corrosion resistance to withstand high temperature conditions of Exhaust Gas Recirculation Coolers.

公开(公告)号：US20220371116A1

公开(公告)日：2022-11-24

申请号：US17765564

申请日：2020-11-25

Applicant: OERLIKON METCO (US) INC.

Inventor： Dongmyoung LEE ,  Subramaniam RANGASWAMY

IPC: B23K1/00 ,  B23K35/02 ,  B23K35/22 ,  B23K35/30

Abstract: Ni—Mn—Si based braze filler alloys or metals which may be nickel-rich, manganese-rich, or silicon-rich braze filler alloys, have unexpectedly narrow melting temperature ranges, low solidus and low liquidus temperatures, as determined by Differential Scanning calorimetry (DSC), while exhibiting good wetting, and spreading, without deleterious significant boride formation into the base metal, and can be brazed at lower temperatures. The nickel rich alloys contain 58 wt % to 70 wt % nickel, the manganese-rich alloys contain 55 wt % to 62 wt % manganese, and the silicon-rich alloys contain 25 wt % to 29 wt % silicon. Copper with or without boron to partly replace nickel may be employed without any substantial increase of the melting point, or to reduce the melting point. The braze filler alloys have sufficient brazability to withstand high temperature conditions for thin-walled aeronautical and other heat exchangers.

公开(公告)号：US20250003030A1

公开(公告)日：2025-01-02

申请号：US18705809

申请日：2022-11-04

Applicant: OERLIKON METCO (US) INC.

Inventor： Dongmyoung LEE ,  Satya N. KUDAPA

IPC: C22C19/05 ,  B22F1/05 ,  B22F1/065 ,  B22F9/08 ,  B22F10/28 ,  B33Y10/00 ,  B33Y70/00

Abstract: A Ni—Cr—W—Mo—La alloy material powder for additive manufacturing has a composition of: 18.0-22.0 wt % Cr; 12.0-15.0 wt % W; 1.0-3.0 wt % Mo; 0.15-0.75 wt % Al; 0.005-0.05 wt % La; 0.001≤C≤0.045 wt %; and 0.005≤Si≤0.20 wt %; and remainder Ni and unavoidable residual elements and impurities. The powder has a general size distribution between 10 and 100 μm.

公开(公告)号：US20250043396A1

公开(公告)日：2025-02-06

申请号：US18705807

申请日：2022-11-04

Applicant: OERLIKON METCO (US) INC.

Inventor： Dongmyoung LEE ,  Satya N. KUDAPA

IPC: C22C30/00 ,  B22F1/052 ,  B22F10/28 ,  B22F10/366 ,  B33Y10/00 ,  B33Y70/00

Abstract: An alloy for powder-based additive manufacturing is provided that includes a powder having 20-24 wt % of Ni; 20-24 wt % of Cr, 13-16 wt % of W; 0.2-0.50 wt % of Si; 0-3 wt % of Fe; 0-1.25 wt % of Mn; 0-0.015 B; >0 C; >0 La; and a balance of Co, in which a ratio in a content of C to La in the alloy is