冷轧诱发纯钛板材的表面纳米化

1.东北大学研究院沈阳110819

2.东北大学研究院沈阳110819

3.东北大学研究院沈阳110819

4.东北大学研究院沈阳110819

5.东北大学研究院沈阳110819

6.东北大学研究院沈阳110819

基金项目: 国家自然科学基金资助项目(50571095)

对工业纯钛板材进行多道次、大压下量和变方向的轧制,观察显微组织和测试性能.结果表明,工业纯钛板材表面形成等轴状、具有中等到大角度的取向差的纳米晶组织.经过83％压下量轧制的板材表面形成厚度约20 μm的强化层.表面纳米化使纯钛板材抗拉强度提高至860 MPa,延伸率下降至9.5％.

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