| 摘要 |
<p>A low carbon steel has a composition which is ferritic, martensitic or ferritic: martensitic at temperatures of the order of 700 DEG C and substantially fully austenitic at temperatures in excess of 1000 DEG C and nitriding of a refractory stable metal nitride former, eg titanium, of the alloy is effected while the alloy is in its substantially fully austenitic state so as to produce a fine and homogeneous dispersion of the nitride and thereby enhance the creep strength of the alloy when in its ferritic, martensitic or ferritic: martensitic state.</p> |
