Effects of proton irradiation on nanocluster precipitation in ferritic steel containing fcc alloying additions
Effects of proton irradiation on nanocluster precipitation in ferritic steel containing fcc alloying additions
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质子辐照对含 FCC 合金添加剂的铁素体钢中纳米团簇析出的影响
DOI：
10.1016/j.actamat.2012.02.008
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发表时间：
2012-04
期刊：
影响因子：
9.4
通讯作者：
Chin, B.A.
中科院分区：
文献类型：
--
作者：
Ma, D.;Chen, G.;Williams, J.R.;Chin, B.A.
在50°C下，用4 MeV质子辐照新开发的具有和不具有预先存在的纳米级沉淀物的沉淀强化铁素体钢，剂量为1.5mdpa，随后通过纳米压痕和原子探针断层扫描进行检查。观察到辐照增强沉淀和预先存在的纳米级沉淀物的粗化。热老化和质子辐照后，Cu沿着分布在沉淀物中心，Ni、Al和Mn向沉淀物/基体界面偏析。质子辐照诱导的沉淀反应和粗化的预先存在的纳米级沉淀物，这些结果是类似的热老化过程。纳米级析出相的析出和粗化是导致硬度变化的主要原因。观察到的辐射诱导软化基本上是由于预先存在的富铜纳米级沉淀物的粗化。讨论了沉淀对反应堆压力容器用钢辐照后脆化的影响。
Newly developed precipitate-strengthened ferritic steels with and without pre-existing nanoscale precipitates were irradiated with 4MeV protons to a dose of ∼5mdpa at 50°C and subsequently examined by nanoindentation and atom probe tomography. Irradiation-enhanced precipitation and coarsening of pre-existing nanoscale precipitates were observed. Cu partitions to the precipitate core along with a segregation of Ni, Al and Mn to the precipitate/matrix interface after both thermal aging and proton irradiation. Proton irradiation induces the precipitation reaction and coarsening of pre-existing nanoscale precipitates, and these results are similar to a thermal aging process. The precipitation and coarsening of nanoscale precipitates are responsible for the changes in hardness. The observation of the radiation-induced softening is essentially due to the coarsening of the pre-existing Cu-rich nanoscale precipitates. The implication of the precipitation on the embrittlement of reactor-pressure-vessel steels after irradiation is discussed.
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影响因子：
1
作者：
G. Odette;G. Lucas
通讯作者：
G. Odette;G. Lucas
DOI：
10.1520/stp1270-eb
发表时间：
1990-07
期刊：
--
影响因子：
--
作者：
R. Nanstad;M. L. Hamilton;F. Garner;Arvind S. Kumar
通讯作者：
R. Nanstad;M. L. Hamilton;F. Garner;Arvind S. Kumar
影响因子：
3.1
作者：
P. Pareige;Michael K. Miller;R. Stoller;D. Hoelzer;E. Cadel;B. Radiguet
通讯作者：
P. Pareige;Michael K. Miller;R. Stoller;D. Hoelzer;E. Cadel;B. Radiguet
DOI：
10.1007/bf02649815
发表时间：
1996-06
期刊：
Metallurgical and Materials Transactions A
影响因子：
--
作者：
S. W. Thompson;D. J. Colvin;G. Krauss
通讯作者：
S. W. Thompson;D. J. Colvin;G. Krauss
DOI：
10.1080/01418610008212077
发表时间：
2000-03
期刊：
Philosophical Magazine A
影响因子：
--
作者：
R. Monzen;M. Jenkins;Adrian P. Sutton
通讯作者：
R. Monzen;M. Jenkins;Adrian P. Sutton