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夹杂物对超高强度钢应力应变场的影响

侯杰 董建新 姚志浩

侯杰, 董建新, 姚志浩. 夹杂物对超高强度钢应力应变场的影响[J]. 工程科学学报, 2017, 39(7): 1027-1035. doi: 10.13374/j.issn2095-9389.2017.07.007
引用本文: 侯杰, 董建新, 姚志浩. 夹杂物对超高强度钢应力应变场的影响[J]. 工程科学学报, 2017, 39(7): 1027-1035. doi: 10.13374/j.issn2095-9389.2017.07.007
HOU Jie, DONG Jian-xin, YAO Zhi-hao. Influence of inclusion on stress and strain fields in ultra-high strength steel[J]. Chinese Journal of Engineering, 2017, 39(7): 1027-1035. doi: 10.13374/j.issn2095-9389.2017.07.007
Citation: HOU Jie, DONG Jian-xin, YAO Zhi-hao. Influence of inclusion on stress and strain fields in ultra-high strength steel[J]. Chinese Journal of Engineering, 2017, 39(7): 1027-1035. doi: 10.13374/j.issn2095-9389.2017.07.007

夹杂物对超高强度钢应力应变场的影响

doi: 10.13374/j.issn2095-9389.2017.07.007
基金项目: 

国家自然科学基金资助项目(51371023)

详细信息
  • 中图分类号: TG146.1

Influence of inclusion on stress and strain fields in ultra-high strength steel

  • 摘要: 非金属夹杂物对钢性能的影响与夹杂物的特征参数密切相关.首先分析拉伸和疲劳载荷下超高强度钢中TiN夹杂物导致裂纹萌生的扫描电镜原位观察结果,采用MSC Marc有限元分析软件对夹杂物及周围基体的应力场进行计算,然后对拉伸载荷下不同特征参数的TiN夹杂物及周围基体的应力应变场进行模拟.结果表明,有限元法能够解释并预测夹杂物及周围基体的力学行为.三角形夹杂物尖角附近的应力集中最严重.矩形夹杂物内部高应力区的位置受夹杂物与外载荷方向夹角的影响.随邻近夹杂物间距的增大,基体内的最大应力由夹杂物外侧移至夹杂物之间.近表面夹杂物使得基体自由表面附近出现高应力区,基体内最大应力的位置受夹杂物与自由表面距离和尺寸的影响.
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出版历程
  • 收稿日期:  2016-10-04

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