Correlation between Continuous/Discontinuous Yielding and Hall-Petch Slope in High Purity Iron

被引：32

作者：

Gao, Si ^{[1
]}

Shibata, Akinobu ^{[1
]}

Chen, Meichuan ^{[1
]}

Park, Nokeun ^{[1
]}

Tsuji, Nobuhiro ^{[1
]}

机构：

[1] Kyoto Univ, Dept Mat Sci & Engn, Kyoto 6068501, Japan

来源：

MATERIALS TRANSACTIONS | 2014年 / 55卷 / 01期

关键词：

yielding behavior; Hall-Petch relationship; iron; ULTRAFINE-GRAINED ALUMINUM; DEFORMATION; STEELS;

D O I：

10.2320/matertrans.MA201326

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High purity iron specimens containing 11 ppm carbon and 8 ppm nitrogen with different grain sizes were fabricated by cold rolling and subsequent annealing. It was found that the specimens exhibited entirely different yielding behavior in tensile tests depending on different cooling processes after annealing. The water-cooled specimens exhibited continuous yielding while the air-cooled ones exhibited discontinuous yielding. It was found that the Hall-Petch slope, k(y), significantly changed depending on the different yielding behaviors.

引用

页码：69 / 72

页数：4

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