氧化物弥散增强低活化铁素体/马氏体9Cr钢的显微组织与拉伸性能
Microstructure and Tensile Properties of 9Cr-ODS RAFM Steel
摘 要
采用粉末冶金法制备了核聚变反应堆第一壁候选结构材料———氧化物弥散强化低活化9Cr钢, 采用XRD、OM、SEM、EDS等对合金化之后的粉体及烧结体的组织进行了分析, 讨论了球料比对粉体特性以及烧结温度对烧结体组织与抗拉强度的影响。结果表明:球料比为20∶1、球磨48h的粉体颗粒呈片层状, 尺寸较均匀, 合金化效果较好;烧结温度在1300~1390 ℃范围内, 随着温度的提高, 烧结体的孔隙率降低, 组织更加均匀, 抗拉强度由376.0 MPa 逐渐增大到562.9MPa, 伸长率同步增大, 最大为20.2%。
机械合金化
烧结温度
抗拉强度
9Cr-ODS RAFM steel
mechanical alloying
sintering temperature
tensile strength
Abstract
The method of powder metallurgy was used to prepare nuclear fusion reactor first-wall structural materials———9Cr-ODS RAFM steel, the microstructure of powders after alloying and sintered specimen was analyzed by using XRD, OM, SEM and EDS, and the effects of ratio of grinding media to material on powders characteristics and sintering temperature on the microstructure and tensile strength of sintered bodies were discussed. The results show that the alloying was better and the powders presented flake and uniform size when the ratio of grinding media to material was 20∶1 and ball-milling time was 48 h. When the sintering temperature was 1300-1390 ℃, the porosity of sintered bodiesde creased, microstructure was more uniform, tensile strength increased gradually from 376.0 MPa to 562.9 MPa and the elongation increased in step with tensile strength, its maximum was 20.2%.
中图分类号 TF121
所属栏目
基金项目 聚变堆面向等离子体材料的基础研究项目(2010GB109000);国家自然科学基金重点资助项目(50634060)
收稿日期 2010/7/3
修改稿日期 2011/3/21
网络出版日期
作者单位点击查看
备注周敏(1984-), 女, 山西大同人, 硕士研究生。
引用该论文: ZHOU Min,XIONG Wei-hao,YAO Zhen-hua,PENG Qian-yun,HUANG Yu-zhu. Microstructure and Tensile Properties of 9Cr-ODS RAFM Steel[J]. Materials for mechancial engineering, 2011, 35(8): 62～65
周敏,熊惟皓,姚振华,彭倩筠,黄玉柱. 氧化物弥散增强低活化铁素体/马氏体9Cr钢的显微组织与拉伸性能[J]. 机械工程材料, 2011, 35(8): 62～65
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参考文献
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【8】KURTZ R J, ALAMO A, LUCON E, et al.. Recent progress toward development of reduced activation ferritic/martensitic steels for fusion structural applications[J]. Journal of Nuclear Materials, 2009, 386/388:411-417.
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【10】陈思普.铁基镍基钴基合金熔点计算方法和经验公式[J].特殊钢, 1992, 13(2):29-30.
【11】赵飞, 乔建生, 黄依娜, 等.硅对低活化马氏体钢电子辐照行为的影响[J].原子能科学技术, 2008, 42(1):15-21.
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【14】赵密, 郭英奎, 俞泽民, 等.烧结温度对不锈钢(316L)致密性及强度的影响[J].哈尔滨理工大学学报, 2000, 5(3):105-107.
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