公开(公告)号：DE60230564D1

公开(公告)日：2009-02-12

申请号：DE60230564

申请日：2002-01-31

Applicant: NAT INST FOR MATERIALS SCIENCE ,  SUMITOMO METAL IND ,  HITACHI LTD

Inventor： HORIUCHI TOSHIAKI ,  IGARASHI MASAAKI ,  ABE FUJIO

IPC: C21D6/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/30 ,  C22C38/32 ,  C22C38/54

Abstract: The present invention provides a martensitic heat resistant alloy having a composition (A) comprising, % by weight: 0.03 to 0.15% of C; 0.01 to 0.9% of Si; 0.01 to 1.5% of Mn; 8.0 to 13.0% of Cr; 0.0005 to 0.015% of Al; no more than 2.0% of Mo; no more than 4.0% of W; 0.05 to 0.5% of V; 0.01 to 0.2% of Nb; 0.1 to 5.0% of Co; 0.008 to 0.03% of B; less than 0.005% of N: and Fe and inevitable impurities as the remainder, wherein (B) the contents (% by weight) of Mo, W, B and N satisfy the following formulae (1) and (2). B - 0.772N > 0.007 W + 1.916Mo - 16.99B > 2.0 The martensitic heat resistant alloy of the present invention has excellent oxidation resistance, hot workability and ductility and exhibits high creep rupture strength in a range of relatively long rupture time at a high temperature.

公开(公告)号：DK1275744T3

公开(公告)日：2009-04-27

申请号：DK02711262

申请日：2002-01-31

Applicant: NAT INST FOR MATERIALS SCIENCE ,  SUMITOMO METAL IND ,  HITACHI LTD

Inventor： HORIUCHI TOSHIAKI ,  IGARASHI MASAAKI ,  ABE FUJIO

IPC: C21D6/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/30 ,  C22C38/32 ,  C22C38/54

Abstract: The present invention provides a martensitic heat resistant alloy having a composition (A) comprising, % by weight: 0.03 to 0.15% of C; 0.01 to 0.9% of Si; 0.01 to 1.5% of Mn; 8.0 to 13.0% of Cr; 0.0005 to 0.015% of Al; no more than 2.0% of Mo; no more than 4.0% of W; 0.05 to 0.5% of V; 0.01 to 0.2% of Nb; 0.1 to 5.0% of Co; 0.008 to 0.03% of B; less than 0.005% of N: and Fe and inevitable impurities as the remainder, wherein (B) the contents (% by weight) of Mo, W, B and N satisfy the following formulae (1) and (2). B - 0.772N > 0.007 W + 1.916Mo - 16.99B > 2.0 The martensitic heat resistant alloy of the present invention has excellent oxidation resistance, hot workability and ductility and exhibits high creep rupture strength in a range of relatively long rupture time at a high temperature.