吴志强,卢立伟,丁桦.低密度高锰高铝钢的动态变形行为及韧脆转变研究进展[J].精密成形工程,2018,10(6):22-29.
WU Zhi-qiang,LU Li-wei,DING Hua.Research Progress on Dynamic Deformation Behavior and Brittle to Ductile Transition Mechanism of Low Density High Mn and Al Steels[J].Journal of Netshape Forming Engineering,2018,10(6):22-29. |
| 低密度高锰高铝钢的动态变形行为及韧脆转变研究进展 |
| Research Progress on Dynamic Deformation Behavior and Brittle to Ductile Transition Mechanism of Low Density High Mn and Al Steels |
| 投稿时间：2018-08-28 修订日期：2018-11-10 |
| DOI：10.3969/j.issn.1674-6457.2018.06.004 |
| 中文关键词: 低密度钢 动态变形 韧脆转变 变形机制 |
| 英文关键词: low density steel dynamic deformation brittle to ductile transition deformation mechanism |
| 基金项目:国家自然科学基金（51704112，51505143）；湖南省自然科学基金（2018JJ3181） |
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| 中文摘要: |
| 低密度高锰高铝钢具有低密度和超高强塑性，在汽车工业领域具有良好的应用前景。综述了低密度高锰高铝钢的力学响应对温度、应变速率的依赖性，以及在不同应变速率和温度下低密度高锰高铝钢的微观变形机制和韧脆转变机理。同时分析了目前研究中存在的问题，指出了在应变速率和低温下，多缺陷与纳米尺度κ-carbide之间的交互作用机理、高应变速率诱发孪晶机制和局部温升抑制孪晶机制产生的条件等研究尚需进一步完善。随着研究的深入和完善，可以为低密度高锰高铝钢的性能优化和广泛应用提供基础。 |
| 英文摘要: |
| Low density high Mn and Al-content steel has a promising prospect in automobile industry because of the excellent combinations of low density, ultrahigh strength and ductility. The dynamic deformation behavior of low density high Mn and Al-content steel and find the mechanism of brittle to ductile transition under dynamic loadings by recourse to the dynamic tensile tests under low temperatures and strain rates were reviewed. Meanwhile, the current problems in research were analyzed. It was pointed out that interactions of twinning, dislocation, shear band and κ-carbide and the mechanism of influence of defects induced by low temperature and strain rate on dislocation mobility, the mechanism of high strain rate induced twinning and local heating suppressed twinning required further investigation. In-depth and perfect research could provide a theoretical and processing basis for performance optimization and wide application of low density high Mn and Al-content steel. |
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