Tensile behavior of friction-stir welded AZ31 magnesium alloy

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• 作者：S. Mironov^a ; ^{smironov@material.tohoku.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; T. Onuma^a ; Y.S. Sato^a ; S. Yoneyama^b ; H. Kokawa^a
• 关键词：Magnesium alloys ; Welding ; Thermomechanical processing ; EBSD ; Strain measurement ; Twinning
• 刊名：Materials Science & Engineering A
• 出版年：2017
• 出版时间：2 January 2017
• 年：2017
• 卷：679
• 期：Complete
• 页码：272-281
• 全文大小：2745 K

文摘

In this work, electron backscatter diffraction (EBSD) and digital image correlation were employed to study tensile behavior of friction-stir welded magnesium alloy AZ31. The character of measured strain patterns indicated the prevalence of basal slip but also suggested significant activity of prism slip. A substantial strain gradient was found lengthways in the stir zone. The failure was shown to be initiated at the weld root and to originate from double class="mathmlsrc">title="View the MathML source" class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S092150931631245X&_mathId=si0015.gif&_user=111111111&_pii=S092150931631245X&_rdoc=1&_issn=09215093&md5=abb822fa5e8cff4b1166578f59672d7f">class="imgLazyJSB inlineImage" height="19" width="107" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S092150931631245X-si0015.gif">class="mathContainer hidden">class="mathCode">$\{10\overline{1}1\}-\{10\overline{1}2\}$ twinning. Crack propagation was influenced by the “onion-ring structure” of the stir zone.