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锰对高硼铁基合金凝固组织的影响
Effect of Manganese on Solidification Structure of High Boron Iron-Based Alloy 在线阅读 下载PDF
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- DOI:
- 作者:
- 陈金 吴润 徐凯 曾松盛
CHEN Jin;WU Run;XU Kai;ZENG Songsheng
- 作者单位:
- 武汉科技大学材料与冶金学院 华菱安赛乐米塔尔汽车板材有限公司技术中心
School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;Technology Center, Valin Arcelor Mittal Auto Sheet Co., Ltd., Loudi 417000, China
- 关键词:
- 高硼铁基合金 凝固 锰 硼化物
ferroboron-based alloy solidification manganese boride
- 摘要:
- 设计了2%、4%、6%、8%、10%5种锰含量的高硼耐磨合金钢,研究了凝固过程和锰含量对铸态组织及力学性能的影响。结果表明,高硼耐磨合金的铸态组织由树枝状基体组织和共晶组织(γ+硼化物)构成;随着锰量的增加,树枝状基体组织的含量呈下降趋势,硼碳化合物量变化不大;随着锰含量的增加,材料的硬度在HRC 45~65变化,呈现先上升后下降的趋势;冲击韧度在1.5~3.0 J/cm^2波动,呈现先下降后上升的趋势。High boron wear-resistant alloy steels with manganese content of 2%, 4%, 6%, 8% and 10% were designed, the effects of solidification process and manganese content on the as-cast microstructure and mechanical properties of casting were studied. The results show that the as-cast microstructure of high boron wear-resistant alloy is composed of dendritic matrix and eutectic microstructure (y+boride). With the increase of manganese content, the content of dendritic matrix decreases, but the content of borocarbon does not change. With the increase of manganese content, the hardness of the materials changes within the range of HRC 45-65, showing a trend of increasing first and then decreasing. The impact toughness fluctuates between 1.5-3.0 J/cm^2, showing a trend of decreasing first and then increasing.