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dearlucy

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[交流] 合金的理解 已有7人参与

大家好,我是刚开始接触合金,想请教大家一个问题,Mg-Zr-30合金中的30怎么理解,是指Zr的含量是30%吗?特向大家请教。。。。
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sourbing

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Zr:30±2%
你理解的太对了,哈哈
2楼2011-05-23 15:52:57
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dearlucy

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引用回帖:
Originally posted by sourbing at 2011-05-23 15:52:57:
Zr:30±2%
你理解的太对了,哈哈

还有个问题,就是这种合金的熔点是多少?因为涉及到实验需要把温度设定在多少,谢谢您。。。。。
3楼2011-05-23 16:54:27
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imrsfb

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The most commonly used magnesium alloys contain aluminum, zinc, and manganese; aluminum and zinc are added in ingot form, dissolving readily at normal melt temperature (ca. 700 oC). Manganese is added as the anhydrous chloride or as a hardener, for example, Al-5% Mn. The alloying elements are added at 720-750 oC; the alloy is homogenized and then cast.

High-purity magnesium alloys such as AZ91D, AZ91E, and AM60B contain very low levels of the heavy-metal impurities nickel, iron, and copper, resulting in far better corrosion resistance than ordinary alloys. Iron is removed by saturating the melt with manganese at elevated temperature (700-750 oC) and then reducing the temperature, thus precipitating the iron in the form of an AlMnFe intermetallic compound.

Mechanical properties of magnesium alloys improve as grain size is reduced. Carbon inoculation is used commonly to grain-refine aluminum-containing magnesium alloys, the inoculant being added at ca. 780 oC. Zirconium is frequently used to grain-refine alloys lacking aluminum. It is added as a Mg-Zr 30 % hardener above 750 oC. The mechanisms of grain refining are not fully understood, but several theories have been proposed. Both zirconium and magnesium have hexagonal crystal structures with similar lattice parameters, making zirconium an ideal nucleating particle for magnesium.
http://www.magnesium.com/w3/data-bank/index.php?mgw=176
4楼2011-05-23 17:02:06
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dearlucy

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引用回帖:
Originally posted by imrsfb at 2011-05-23 17:02:06:
The most commonly used magnesium alloys contain aluminum, zinc, and manganese; aluminum and zinc are added in ingot form, dissolving readily at normal melt temperature (ca. 700 oC). Manganese is ad ...

Thank you very much!!!
5楼2011-05-24 10:26:22
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arkmix

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要搞合金一定要有相图~
6楼2011-05-24 17:26:05
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bushliu5516

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小木虫(金币+0.5):给个红包,谢谢回帖
镁合金很有前途,本人也是做镁合金的,镁合金压铸。
放眼大局,改变观念!
7楼2011-05-24 18:35:21
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8楼2011-05-24 18:53:50
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dearlucy

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引用回帖:
Originally posted by bushliu5516 at 2011-05-24 18:35:21:
镁合金很有前途,本人也是做镁合金的,镁合金压铸。

你好啊,我是做泡沫镁合金的,但是这个东西好像在国内来说不是很成熟,而且工艺也没有完全的掌握,没有做镁合金压铸的好。。。。。
9楼2011-05-25 10:09:45
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dearlucy

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引用回帖:
Originally posted by arkmix at 2011-05-24 17:26:05:
要搞合金一定要有相图~

是啊,谢谢。。。。。
10楼2011-05-25 10:10:14
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