Precipitation of nanosized nitrides in plasma nitrided Fe–M (M = Al, Cr, Ti, V) alloys
Precipitation of nanosized nitrides in plasma nitrided Fe–M (M = Al, Cr, Ti, V) alloys
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等离子氮化 Fe-M (Má=óAl, Cr, Ti, V) 合金中纳米氮化物的沉淀
DOI：
10.1179/1743284710y.0000000014
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发表时间：
2011
影响因子：
1.8
通讯作者：
T. Furuhara
中科院分区：
文献类型：
--
作者：
G. Miyamoto;Y. Tomio;H. Aota;Keiichiro Oh;Kazuhiro Hono;T. Furuhara
用高分辨透射电镜研究了Fe-M二元合金离子渗氮过程中形成的纳米合金氮化物或合金元素（M）-氮（N）团簇。Fe-Cr合金试样表面形成了厚约2nm、直径约10 nm的NaCl结构的盘状CrN。在氮化后的Fe-Al试样中，在试样表面附近形成了亚稳NaCl型和稳定纤锌矿型两种AlN氮化物。这两个都比CrN大得多。与此相反，Fe-Ti和Fe-V合金中形成了高密度的直径为几个纳米的M-N团簇，其中许多是位于{001} α上的单层结构，使硬度比Fe-Cr和Fe-Al合金有较大的提高。通过对贫M/N bcc相和富M/N bcc相的相分离的化学分析，解释了渗氮过程中M-N团簇的形成。
Nanosized alloy nitrides or alloying element (M)–Nitrogen(N) cluster formed in plasma nitriding of Fe–M binary alloys were investigated by means of high resolution TEM. Specimen surface of the Fe–Cr alloys was hardened by the formation of disk shaped CrN of NaCl structure, which is ∼2 nm thick and 10 nm in diameter. In nitrided Fe–Al specimen, two kinds of AlN nitrides of metastable NaCl type and stable wurtzite type were formed near the specimen surface. Both of these were much larger than CrN. Contrasting to these specimens, in nitrided Fe–Ti and Fe–V alloys, high density M–N clusters of few nanometres diameter, many of which were monolayered lying on {001} α , were formed, leading to larger hardness increase than that in Fe–Cr and Fe–Al alloys. The formation of M–N clusters in nitriding is explained by the thermodynamical analysis of phase separation between M/N poor and M/N rich bcc phases.
沉淀%20in%20a%20等离子%20氮化%20Fe-1.Omass%Al%20合金
DOI：
--
发表时间：
2006
期刊：
Proceeding of International Conference on Advanced Structural Steels 2006
影响因子：
--
作者：
Y.Tomio;G.Miyamoto;T.Furuhara;T.Maki
通讯作者：
T.Maki