Grain Boundary Engineering for the Control of Oxidation Embrittlement

Grain Boundary Engineering for the Control of Oxidation Embrittlement
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控制氧化脆化的晶界工程

DOI：
10.1007/978-1-4615-1205-9_3
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Tadao Watanabe
Tadao Watanabe
中科院分区：
--
文献类型：
--
作者：
S. Yamaura;Y. Igarashi;S. Tsurekawa;Tadao Watanabe

文献摘要

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研究了晶界类型对Ni-40at%Fe合金晶间氧化的影响。研究发现，晶间氧化优先发生在随机晶界，而低重合度晶界，特别是重合度为0.13、0.11、0.19和0.27的晶界具有优良的抗氧化性。通过考虑晶粒尺寸、晶界特征分布（GBCD）和晶界连通性的重要作用，尝试了控制氧化辅助晶间脆性的晶界工程。已经预测了用于此目的的最佳晶界微结构的存在。
The effect of grain boundary type on intergranular oxidation was studied in a nickel-40at%iron alloy. It has been found that intergranular oxidation takes place preferentially at random boundaries while low-Σcoincidence boundaries, particularlyΣ3,Σ11,Σ19 andΣ27 coincidence boundaries have excellent oxidation resistance. The grain boundary engineering for the control of oxidation-assisted intergranular brittleness has been attempted by taking account important roles of the grain size, the grain boundary character distribution (GBCD) and the grain boundary connectivity. The presence of an optimal grain boundary microstructure for this purpose has been predicted.