Study of the thermal stability of nanoparticle distributions in an oxide dispersion strengthened (ODS) ferritic alloys
Study of the thermal stability of nanoparticle distributions in an oxide dispersion strengthened (ODS) ferritic alloys
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DOI：
10.1016/j.jnucmat.2011.12.028
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发表时间：
2012-09
影响因子：
3.1
通讯作者：
S. Zhong;J. Ribis;V. Klosek;Y. Carlan;N. Lochet;V. Ji;M. Mathon
中科院分区：
文献类型：
--
作者：
S. Zhong;J. Ribis;V. Klosek;Y. Carlan;N. Lochet;V. Ji;M. Mathon
氧化物弥散强化铁素体合金具有优异的高温机械性能，具有广泛的应用前景。为了研究纳米Y2Ti2O7粒子在Fe-14Cr1W合金中的析出动力学，在不同温度(1050℃~1400℃)和不同时间(0.5~10h)下进行了热处理实验，并用小角中子散射技术(SANS)对样品进行了磁场下的表征，并通过透射电子显微镜和显微硬度测量获得了分散氧化物颗粒尺寸的纳米信息。
Oxide dispersion strengthened (ODS) ferritic alloys have a vast applicability due to their excellent mechanical resistance at high temperature. The precipitate dispersion of the nanoparticles in the matrix has a great effect on the creep properties of the material; in order to study the kinetics of precipitation of Y2Ti2O7nanoparticles in Fe–14Cr1W ODS alloy, annealing experiments were taken at different temperatures (1050°C–1400°C) and for different times (0.5–10h), then these samples were characterized by the small-angle neutron scattering technique (SANS) under magnetic field and TEM investigations and microhardness measurements were performed to gather nanoscopic information about the dispersed oxide particles size.