|
|||||
|
|
| 冲击载荷下应变诱导高锰钢表层组织纳米化机制 | |
| 引用本文： | 许云华,陈渝眉,熊建龙,朱金华.冲击载荷下应变诱导高锰钢表层组织纳米化机制[J].金属学报,2001,37(2):165-170. |
| 作者姓名： | 许云华 陈渝眉 熊建龙 朱金华 |
| 作者单位： | 1. 西安交通大学金属材料强度国家重点实验室,西安,710049;西安建筑科技大学耐磨材料研究所,西安,710055 2. 西安交通大学金属材料强度国家重点实验室,西安,710049 3. 西安建筑科技大学耐磨材料研究所,西安,710055 |
| 基金项目： | 国家自然科学基金资助项目 59771048 |
| 摘 要： | 利用高分辨电子显微术，对高能冲击接触加载下高锰钢摩擦表面塑变诱导纳米晶形成机制进行了研究，结果表明，冲击接触加载下，高锰钢冲击接触表面由纳米尺度奥氏体与非晶组成，位错反应和重组以及高密度孪晶在奥氏体纳米化过程中起重要作用；微小孪晶与层错之间或层错与位错之间的相互作用，使晶体向非晶转变，随着非晶数量增加，纳米晶尺度减小。 |
| 关 键 词： | 冲击载荷 高锰钢 应变诱导纳米晶 |
| 文章编号： | 0412-1961(2001)02-0165-06 |
| 修稿时间： | 2000年4月6日 |
MECHANISM OF STRAIN-INDUCED NANOCRYSTALLIZATION OF HADFIELD STEEL UNDER HIGH ENERGY IMPACT LOAD |
|
| XU Yunhua,CHEN Yumei,XIONG Jianlong,ZHU Jinhua State Key Laboratory of Material Strength,Xi'an Jiaotong University,Xi'an Institute of Wear Resistance Material,Xi'an University of Architecture & Technology,Xi'an.MECHANISM OF STRAIN-INDUCED NANOCRYSTALLIZATION OF HADFIELD STEEL UNDER HIGH ENERGY IMPACT LOAD[J].Acta Metallurgica Sinica,2001,37(2):165-170. | |
| Authors: | XU Yunhua CHEN Yumei XIONG Jianlong ZHU Jinhua State Key Laboratory of Material Strength Xi'an Jiaotong University Xi'an Institute of Wear Resistance Material Xi'an University of Architecture & Technology Xi'an |
| Affiliation: | XU Yunhua,CHEN Yumei,XIONG Jianlong,ZHU Jinhua State Key Laboratory of Material Strength,Xi'an Jiaotong University,Xi'an 710049 Institute of Wear Resistance Material,Xi'an University of Architecture & Technology,Xi'an 710055 |
| Abstract: | By means of high resolution electron microscopy, the strain induced nanocrystallization and partial amorphization of the surface farer structure of the hadfield manganese steel under high impact energy were observed and a possible mechanism was suggested. Dislocation reaction and recombination, as well as microtwin with high density play an important role in nanocrystallization. The interactions between twin and stacking fault, or dislocation and stacking fault result in the severe lattice distortion which induces the transformation of crystalline-amorphous structure. The increase in amorphous region corresponds to the decrease of the size of the nanocrystal grains. |
| Keywords: | impact load hadfield steel strain-induced nanocrystallzation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |