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辛超

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引用回帖:
: Originally posted by comma at 2012-02-10 15:33:57:
看样子,需要你自己定义个能说服别人的在你的实验里晶粒的概念了,那些白色的应该是晶核成长后的形貌,随着参数变化晶核成长有所抑制?枝晶不在利于发达?组织趋于均匀?
你这是半固态成型or搅拌成型?

我这是稀土长周期镁合金铸态图,自己定义晶粒?可以吗?我试过不同的腐蚀剂,就是腐蚀不出晶界。为此苦恼。
11楼2012-02-10 20:59:05
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kokon1022

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qlf_126(金币+1): 感谢参与!希望多来金属版交流! 2012-03-13 08:40:22
引用回帖:
6楼: Originally posted by 辛超 at 2012-02-07 11:31:50:
麻烦您看下我上传的图,主要为树枝晶,像这样的树枝晶的晶粒直径以什么为准?

could you please paste your composition so we can know what's going on there. As far as we know, picric solution works for almost all Mg alloys.

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12楼2012-02-14 23:10:09
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辛超

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引用回帖:
: Originally posted by kokon1022 at 2012-02-14 23:10:09:
could you please paste your composition so we can know what's going on there. As far as we know, picric solution works for almost all Mg alloys.

mg-zn-dy-zr长周期合金(lpso结构),我试过苦味酸,但是苦味酸和硝酸的腐蚀效果一样。只能腐蚀出第二相和镁基体。
13楼2012-02-15 11:12:01
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kokon1022

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zhyq8767(金币+1): 感谢参与 2012-02-15 19:17:42
May i ask what kind of microscope you used? did you observe under polarize light? we did Mg-Zn, it works. the picture you show here looks like you did not use polarize light and by the way the wave length and the angle of the light are also important.
14楼2012-02-15 19:12:02
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15楼2012-12-20 09:55:45
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