| 摘要 |
<p>The invention provides an alloy steel having the following composition: Ni 5-14wt%; Cr 4-16wt%; Co 7-14wt%; Mo 1-5wt%; W 0-5wt%; Ti 0-0.8wt%; Al 0.1-3wt%; the balance being Fe save for incidental impurities. This provides an ultrahigh strength corrosion resistant steel with good toughness, which does not significantly creep at temperatures up to 450°C. The high quantity of alloying elements, particularly chromium, also gives the alloy good corrosion resistance. The alloy is particularly suitable for main shafts of gas turbine engines.</p> |
