介绍了应用DV - 4光电光谱仪，仅用一种测定条件，测定高合金钢中碳、硫、磷、锰、硅、铬、镍、钼、钒、钨、钛、铌、铝元素的含量的方法。
The method of measuring c, s, p, Mn, Si, Cr, Ni, Mo, V, W, ti, Nb, Al element content by DV-4 photoelectric spectroscope on one condition is introduced.
结果表明，随着合金中铈含量的增加，晶界MC相中铌量增加，而钛量相对下降。
The result shows that the content of Nb in MC phase at grain boundaries increases with the increasement of Ce in this alloy but ti decreases at the same time.
提供一种在较宽温度区间具有负热膨胀特性的镍钛铌负热膨胀合金及其制备方法。
The invention provides a negative thermal expansion alloy of Nickel-Titanium-Niobium which has negative thermal expansion characteristics in a wider temperature range and a preparation method.
结果表明，研制开发出的铌钛微合金化if钢具有高的屈服强度和优良的成形性能。
The results show that the steel has high yield strength and quality forming property.
结果表明，研制开发出的铌钛微合金化if钢具有高的屈服强度和优良的成形性能。
The results show that the steel has high yield strength and quality forming property.
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