新聞資訊
2D70耐熱鋁合金顯微組織均勻化熱處理
發布人：上海艾荔艾金屬材料有限公司www.jshcn.cn
更新時間：2015-12-26
利用光學顯微鏡、掃描電子顯微鏡、能譜分析、差示掃描量熱、X射線物相分析研究2D70耐熱鋁合金半連續鑄錠的結晶相及合理的均勻化熱處理制度。
2D70耐熱鋁合金顯微組織均勻化熱處理Homogenization treatment and microstructure of?semicontinous casting ingot of 2D70 heat-resistance aluminum alloy
利用光學顯微鏡、掃描電子顯微鏡、能譜分析、差示掃描量熱、X射線物相分析研究2D70耐熱鋁合金半連續鑄錠的結晶相及合理的均勻化熱處理制度。結果表明：合金半連續鑄錠中枝晶偏析嚴重，存在大量非平衡共晶相，其成分為α(Al)+θ(Al2Cu)+S(Al2CuMg)，其初始熔化溫度為505.4 ℃；在530 ℃溫度以下進行均勻化時，合金中的難溶相Al7Cu2Fe、Al7Cu4Ni、Al9FeNi含量基本沒有變化；合金合理的均勻化熱處理制度為(490 ℃, 16 h)+(520 ℃, 16 h)。
The constituents of the semicontinuous casting ingot of 2D70 heat-resistance aluminum alloy and homogenization treatment were studied by optical microscopy (OM), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX),differential scanning calorimetry(DSC) and X-ray diffraction analysis (XRD). The results indicate that the semicontinuous casting ingot of 2D70 aluminum alloy presents a dendritic microstructure with severe segregation. The phases of the nonequilibrium eutectic are α(Al)+ θ(Al2Cu) +S(Al2CuMg) whose overheating temperature is 505.4 ℃. The volume fraction of hard dissolve phases such as Al7Cu2Fe, Al7Cu4Ni and Al9FeNi changes a little below 530 ℃. The reasonable homogenization treatment process of the alloy is (490 ℃, 16 h) +(520 ℃, 16 h).
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AILIAI has been a reliable partner and supplier of sophisticated and high-quality semi-finished products maed of alloys. In dialogue with our customers, we optimise our products to meet the specific application requirements. AILIAI develops the best alloy material solutions for current and future challenges.
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For more information on the alloys and services that we supply,?call us?at 086-021-67660801 or email us at kefu@ailiaigroup.com. You can also get in touch on social media, we are constantly active on?Weibo?and?Weixin.