期刊
MATERIALS SCIENCE AND TECHNOLOGY
卷 36, 期 14, 页码 1574-1586出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/02670836.2020.1808387
关键词
Nanoparticles; inclusion; microstructure; acicular ferrite; HAZ
资金
- National Natural Science Foundation of China [51734003, 51674023]
- Fundamental Research Funds for the Central Universities [FRF-TP-18-009C1]
The effect of adding MgO nanoparticles to ship plate steel at welding heat-affected zones (HAZs) was experimentally studied. The results showed that the added nanoparticles obviously optimised the inclusions; the average size of the inclusions was significantly reduced, and the distribution was relatively uniform. The toughness of the base metal and HAZ increased by 20-60 J, apart from a slight decrease in the strength of the fine-grained heat-affected zone and a nearly unchanged strength in the coarse-grained heat-affected zone, and approximately similar to 2 mu m (Mg-Al-Ti)O-containing inclusions induced acicular ferrite effectively, thereby simultaneously enhancing the strength and toughness of the inter-critical heat-affected zone. In conclusion, these performance improvements in both the base metal and HAZ could be attributed to grain refinement and inclusion optimisation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据