کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
769840 | 897423 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Formation mechanism of pits on the surface of thin-wall die-casting magnesium alloy components
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Formation mechanism of pits on the surface of thin-wall die-casting magnesium alloy components Formation mechanism of pits on the surface of thin-wall die-casting magnesium alloy components](/preview/png/769840.png)
چکیده انگلیسی
A notebook personal computer casing, made of AZ91D alloy, is manufactured by precision die casting. When the computer casing was kept for some time, it was found that there were some small pits on the surface of the casing. The formation mechanism of the pits was investigated by means of scanning electron microscope and fourier transform infrared spectrophotometry. It is concluded that MgO inclusions in the Mg–Al alloy are an important factor, which leads to the formation of small pits. MgO turns into Mg(OH)2 by absorbing water or steam. Because of density difference between MgO and Mg(OH)2, volume expansion takes place. A basic way of reducing pits is to cut down the content of MgO inclusions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Failure Analysis - Volume 13, Issue 4, June 2006, Pages 558–564
Journal: Engineering Failure Analysis - Volume 13, Issue 4, June 2006, Pages 558–564
نویسندگان
Ying-hui Wei, Guo-sheng Yin, Li-feng Hou, Bing-she Xu, Hideki Ichinose,