发明授权
- 专利标题： High temperature creep resistant austenitic alloy
- 专利标题（中）： 耐高温蠕变奥氏体合金
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申请号： US193705申请日： 1988-05-13
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公开(公告)号： US4849169A公开(公告)日： 1989-07-18
- 发明人: Philip J. Maziasz , Robert W. Swindeman , Gene M. Goodwin
- 申请人： Philip J. Maziasz , Robert W. Swindeman , Gene M. Goodwin
- 申请人地址： DC Washington
- 专利权人： The United States of America as represented by the United States Department of Energy
- 当前专利权人： The United States of America as represented by the United States Department of Energy
- 当前专利权人地址： DC Washington
- 主分类号： C22C30/00
- IPC分类号： C22C30/00
摘要：
An improved austenitic alloy having in wt % 19-21 Cr, 30-35 Ni, 1.5-2.5 Mn, 2-3 Mo, 0.1-0.4 Si, 0.3-0.5 Ti, 0.1-0.3 Nb, 0.1-0.5 V, 0.001-0.005 P, 0.08-0.12 C, 0.01-0.03 N, 0.005-0.01 B and the balance iron that is further improved by annealing for up to 1 hour at 1150.degree.-1200.degree. C. and then cold deforming 5-15 %. The alloy exhibits dramatically improved creep rupture resistance and ductility at 700.degree. C.
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