固溶和预时效Pb合金冷轧退火晶界特征分布

金属学报

2007, Vol. 43

Issue (5): 454-458

论文

本期目录 | 过刊浏览

固溶和预时效Pb合金冷轧退火晶界特征分布

张欣;王卫国;郭红;姜英

山东理工大学机械工程学院金属材料系

GRAIN BOUNDARY CHARACTER DISTRIBUTIONS OF Pb-Ca-Sn-Al ALLOY OF SOLUTION-TREATED AND PRE-AGED FOLLOWED BY STRAIN ANNEALING

山东理工大学机械工程学院金属材料系

引用本文:

张欣; 王卫国; 郭红; 姜英 . 固溶和预时效Pb合金冷轧退火晶界特征分布[J]. 金属学报, 2007, 43(5): 454-458 .

全文: PDF(385 KB)

摘要: 采用电子背散射衍射（EBSD）技术研究了经290℃固溶处理以及经固溶处理后在100℃～200℃预时效处理的Pb-0.05%Ca-1.5%Sn-0.026%Al (质量分数)合金再经形变退火后的晶界特征分布(GBCD)。结果表明：固溶处理后直接进行形变退火的合金样品中出现了较多的特殊晶界，∑3和（∑9+∑27）晶界的比例分别达到49.6%和7.2%，并且特殊晶界能较好地打断一般大角度晶界网络的连通性。相反，固溶处理后先进行预时效处理，然后再进行形变退火的合金样品中形成了较少的特殊晶界，∑3和（∑9+∑27）晶界的比例分别低于35.9%和2.5%，特殊晶界几乎不能打断一般大角度晶界网络的连通性。

关键词 ： Pb合金, 晶界特征分布, 冷轧退火

Abstract：The grain boundary character distributions (GBCD) of Pb-0.05%Ca-1.5%Sn-0.026%Al （mass fraction）alloy, which was solution treated at 290℃ and solution treated followed by pre-ageing at 100℃～200℃ prior to the same strain annealing, were investigated by means of electron back scatter diffraction ( EBSD) techniques. The results indicate that special boundaries were largely populated in the specimen which was strain annealed just after solution treatment. The fractions of ∑3 and（∑9+∑27）boundaries reached 49.6% and 7.2%, respectively, and the connectivity of general high angle boundaries (HABs) network was interrupted substantially by the special boundaries. However, special boundaries of fairly low fraction were developed in the specimen which was strain annealed after solution treatment and pre-ageing. The fractions of ∑3 and（∑9+∑27）boundaries was less than 35.9% and 2.5%, respectively, and the connectivity of general high angle boundaries (HABs) network was not interrupted significantly.

Key words： Pb alloy grain boundary character distribution (GBCD) cold rolling and annealing

收稿日期: 2006-08-31

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https://www.ams.org.cn/CN/Y2007/V43/I5/454

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