富Nd第二相颗粒对钛合金拉伸断裂方式的影响

1.北京航空材料研究院,北京,100095

2.北京航空材料研究院,北京,100095

3.北京航空材料研究院,北京,100095

4.北京航空材料研究院,北京,100095

5.北京航空材料研究院,北京,100095

Effect of Nd-rich second phase particles on fracture behaviors of a near-α titanium alloy

通过薄片试样原位拉伸和圆棒拉伸实验研究了富Nd第二相颗粒的早期脆性断裂对一种近α型钛合金断裂行为的影响.结果表明,随颗粒体积分数的增加,合金的拉伸强度有所降低,但合金的塑性得到改善. 富Nd第二相颗粒的早期脆性断裂不会导致材料的脆性断裂倾向,这是由于颗粒的形成改变了合金基体的组织结构等引起的.

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