Alloying design of oxide dispersion strengthened ferritic steel for long life FBRs core materials
Alloying design of oxide dispersion strengthened ferritic steel for long life FBRs core materials
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DOI：
10.1016/0022-3115(93)90200-i
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发表时间：
1993-09
影响因子：
3.1
通讯作者：
S. Ukai;M. Harada;H. Okada;M. Inoue;S. Nomura;S. Shikakura;Kazutaka Asabe;T. Nishida;M. Fujiwa
中科院分区：
文献类型：
--
作者：
S. Ukai;M. Harada;H. Okada;M. Inoue;S. Nomura;S. Shikakura;Kazutaka Asabe;T. Nishida;M. Fujiwa
氧化物弥散强化铁素体钢具有优异的抗膨胀性能和优异的高温强度，是先进快中子增殖反应堆极具发展前景的包层材料。在13Cr-3W ODS铁素体钢中加入Ti，形成均匀分布的超细氧化物颗粒，显著提高了钢的高温强度。ODS铁素体钢具有竹状晶粒组织和较强的变形织构。与单轴蠕变断裂强度相比，双轴蠕变断裂强度的降低主要归因于这种独特的竹节结构。通过在ODS马氏体钢中引入α到γ相变，成功地获得了双轴和单轴几乎相等的蠕变断裂强度。
Oxide dispersion strengthened (ODS) ferritic steels with excellent swelling resistance and superior high temperature strength are prospective cladding materials for advanced fast breeder reactors. The addition of Ti in 13Cr-3W ODS ferritic steels improved the high temperature strength remarkably by the formation of uniformly distributed ultra-fine oxide particles. ODS ferritic steels have a bamboo-like grain structure and a strong deformation texture. The decrease of creep rupture strength in the bi-axial direction compared to the uni-axial direction is attributed mainly to this unique bamboo grain structure. Nearly equivalent creep rupture strength for both bi-axial and uni-axial direction was successfully attained by introducing the α to γ transformation in ODS martensitic steel.