| 硅对9Cr-1.5WVTa低活化马氏体钢力学性能的影响 |
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| 引用本文： | 何西扣,万发荣,朱衍勇,乔建生. 硅对9Cr-1.5WVTa低活化马氏体钢力学性能的影响[J]. 原子能科学技术, 2010, 44(12): 1482-1486. DOI: 10.7538/yzk.2010.44.12.1482 |
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| 作者姓名： | 何西扣 万发荣 朱衍勇 乔建生 |
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| 作者单位： | 1.钢铁研究总院，北京 ;100081；2.北京科技大学 ;材料物理与化学系，北京 ;100083 |
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| 基金项目： | 国家自然科学基金资助项目，国家重点基础研究发展计划资助项目 |
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| 摘 要： | 基于中国正在研究的聚变堆用9Cr-1.5WVTa低活化马氏体钢(CLAM钢),研究了添加合金元素硅对CLAM钢力学性能的影响。结果表明,添加0.2%Si使得CLAM钢的抗拉强度和屈服强度明显提高,钢的塑性和冲击韧性同时也得到一定提高,其中,韧脆转变温度(DBTT)由-13℃降至-30℃。未添加和添加0.29%Si的CLAM钢均为全马氏体组织,无δ铁素体存在。硅的添加使得9Cr-1.5WVTaSi钢的晶粒细化,从而提高了钢的拉伸和冲击性能。
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| 关 键 词： | 硅 低活化马氏体钢9Cr-1.5WVTa 力学性能 聚变堆 |
Effect of Silicon on Mechanical Properties of 9Cr-1.5WVTa Low Activation Martensitic Steel |
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| HE Xi-kou,WAN Fa-rong,ZHU Yan-yong,QIAO Jian-sheng. Effect of Silicon on Mechanical Properties of 9Cr-1.5WVTa Low Activation Martensitic Steel[J]. Atomic Energy Science and Technology, 2010, 44(12): 1482-1486. DOI: 10.7538/yzk.2010.44.12.1482 |
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| Authors: | HE Xi-kou WAN Fa-rong ZHU Yan-yong QIAO Jian-sheng |
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| Affiliation: | 1.Central Iron & Steel Research Institute, Beijing 100081, China；2.Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | Based on the new Chinese low activation martensitic (CLAM) steel being developed as for fusion reactors, the effect of silicon adding on the mechanical properties of 9Cr-1.5WVTa steels was investigated. The results show that adding 0.2% silicon leads to higher tensile strength, and more excellent plasticity and impact toughness. The ductile-brittle transition temperature (DBTT) is decreased from -13 ℃ to -30 ℃. The 9Cr-1.5WVTaSi steel has a smaller prior-austenite grain size, but microstructures are similar, both fully martensitic steels free of δ-ferrite. It was summarized that the improved tensile and impact properties of the 9Cr-1.5WVTaSi steel were attributed to adding 0.2% silicon, refined the prior-austenite grain size. |
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| Keywords: | silicon low activation martensitic steel 9Cr-1.5WVTa mechanical property fusion reactor |
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