Effects of Preaging on the Mechanical Properties and Precipitation rate of A356 and A357 Casting Aluminum Alloys
碩士 === 國立中央大學 === 機械工程學系 === 84 === The effect of preaging on the A356 and A357 casting alloys were studied bymeans of differential scanning calorimetry, conductivity meter, hardness and tensile test.The results show that nature aging would...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
1996
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| Online Access: | http://ndltd.ncl.edu.tw/handle/77617575280097011633 |
| Summary: | 碩士 === 國立中央大學 === 機械工程學系 === 84 === The effect of preaging on the A356 and A357 casting alloys were
studied bymeans of differential scanning calorimetry,
conductivity meter, hardness and tensile test.The results show
that nature aging would retard the subsequent artificial aging
and reduce the peak aging strength; the damage of natureaging on
A357 alloy is more than A356 alloy.The long of preaging at 90C
would reduce the effect of nature aging and increase the peak
aging strength of A356and A357 alloys.Higther artificial aging
temperature could reduce the effect of nature agingand the time
to peak aging.
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