为了解az31镁合金自由锻过程中织构的形成和变化，用odf分析对AZ31镁合金在自由锻时的微曲向流变行为进行了分析；用光学显微镜对其显微组织和晶粒尺寸进行了测定。

Using ODF's analysis, the micro-orientated flowing behavior of magnesium alloy AZ31 by forging was investigate, and using optical microscopy, the grain size and microstructure were measured.

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得出在含铌x60管线钢中，由于微合金元素的加入，从几个方面抑制了晶粒的长大，并成为微合金钢中最重要的晶粒细化方法之一。

This paper shows that adding of the micro-alloyed elements helps to the inhibiting of grain expansion, thus, becoming one of ways of fine the grain.

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