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小小正钛

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[交流] 镁合金研究发展到什么地步啦,怎么连霍尔派奇公式都能发文章了…… 已有7人参与

http://www.sciencedirect.com/sci ... i/S1359646211005057

Influence of grain size and texture on Hall-Petch relationship for a magnesium alloy
W. Yuana, S.K. Panigrahia, J.-Q. Sua and R.S. Mishra, a,
a Center for Friction Stir Processing, Department of Materials Science & Engineering, Missouri University of Science and Technology, Rolla MO 65409, USA
Received 8 July 2011;  revised 29 August 2011;  accepted 30 August 2011.  Available online 1 September 2011.
Abstract
Friction stir processing was applied to a magnesium alloy to generate various grain sizes with same intense basal texture. Subsequent tensile deformation along two orthogonal directions by easy activation or inhibition of basal slip follows Hall-Petch relationship between yield stress and grain size in both directions. The Hall-Petch parameters are texture dependent. Easy activation of basal slip introduces lower values while inhibition of basal slip leads to higher values. The Hall-Petch parameters are interpreted by texture and microstructural factors.
Keywords: Texture; Hall-Petch relationship; magnesium alloy; friction stir processing

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tangcp

铁杆木虫 (正式写手)


小木虫(金币+0.5):给个红包,谢谢回帖
我觉得这篇文章还蛮有意义,搅拌摩擦加工(不是焊接)这种方法本身就有一定的新颖性,在镁合金中将Hall-Petch公式与织构联系起来有特殊性,因为镁合金中滑移系少,变形困难。
6楼2012-03-02 10:35:07
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