Development of Advanced Steels for Irradiation Environment

辐照环境用先进钢材的开发

基本信息

批准号：
09045042
负责人：
TAKAHASHI Heishichiro
金额：
$ 1.22万
依托单位：
HOKKAIDO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09045042/
关键词：
high Mn steel lower radioactivity fusion reactor electron-irradiation radiation-damage He effect mechanical properties void swelling 相不安定性ボイドフェリング

项目摘要

1. When 316 stainless steel was electron-irradiated, stacking fault dislocation loops were nucleated, and then finally stacking fault tetrahedra of vacancy type (SFT) were nucleated inside the loops. These SFTs acted as void nucleation sites under electron/He dual irradiation.2. Fe-(15-16)% Cr-16% Mn-O.2% C-O.2% N steels have yield stress of 400 MPa and the elongation of 60% at room temperature. These high Mn steels showed excellent irradiation-resistance under irradiation.3. When Fe-Cr-Mn(W,V) steels with W and V were irradiated, no segregation was recognized, and then it was suggested that by adding W, and V segregation is retarded.4. The same Fe-Cr-Mn containing W and V showed higher resistance for irradiation at625K but at higher temperature a lot of small voids were nucleated.5. In Fe-Cr-Mn steels the segregation at grain boundary was larger than the steel with W and V.6.lt was clarified for Fe-(13-16) Cr-(6.5-24.5) Mn-(0.02-0.2)C-0.2 N steels that (a) by contorolling the composition of Cr, C,N single phase of austenite can be obtained even for lower Mn concentration steels, (b)Fe-(15-16)wt% Cr-15.5wt% Mn-(O.02-O.2)wt% C-0.2wt% N steels have excellent mechanical properties, and (c) voids formation were perfectly retarded for Fe-l6wt% Cr-15.5wt% Mn-O.2wt% C-O.2wt% N steel under irradiation at 473-673K.

1。当对316层不锈钢被电子辐照时，将堆叠断层脱位环被核定，然后最终将空位类型（SFT）的四面体四面体堆叠到整个环内。这些SFT在电子/HE双辐射下充当空隙核位点2。 Fe-（15-16）％CR-16％Mn-O.2％C-O.2％N钢的屈服应力为400 MPa，在室温下伸长60％。这些高Mn钢在辐照下显示出极好的辐射抵抗。3。当辐照W和V的Fe-Cr-Mn（W，V）钢时，未识别隔离，然后建议通过添加W，并延迟V种族隔离。4。含有W和V的相同Fe-Cr-MN对辐射的耐药性较高，但在较高温度下，许多小空隙被核中。5。在Fe-Cr-Mn钢中，晶界的隔离大于W和V.6.lt的钢，以Fe-（13-16）Cr-（6.5-24.5）Mn-（0.02-0.2）C阐明。 -0.2 n钢（a）通过将cr，c，n单相的组成即使对于较低的Mn浓度钢的组成也可以获得，（b）Fe-（15-16）wt％CR-15.5wt％MN - （O.02-O.2）WT％C-0.2WT％N钢具有出色的机械性能，并且（C）为Fe-L6WT％CR-15.5WT％MN-O.2Wt％C-O完全阻碍了空隙形成。 .2Wt％N钢在473-673K下进行辐射。