6082鋁合金在使用前須透過熱處理將材料提升至所需機械強度，為了避免熱處理後的粗大晶粒 (二次再結晶)、符合未來高強度鋁合金的需求以及在熱處理製程上達到縮短時間、節能減碳的目的，本研究使用新式熱處理進行探討。鹽浴與紅外線熱處理較傳統電阻加熱熱處理具有可使材料快速加熱、能量轉換效率高等優勢，因此本研究使用之新式熱處理製程分別為鹽浴熱處理製程 (Salt Bath) 與紅外線熱處理製程 (Infrared Heating)。對照組為傳統電阻加熱爐熱處理製程。為了更符合工業上的運用性，以及欲對快速熱處理製程對6082鋁合金顯微組織與機械性質之影響進行了解，本研究所使用之6082鋁合金包含了做為結構用件之熱擠型材以及熱鍛造之實體鍛件進行探討。
研究結果發現，藉以鹽浴快速熱處理可提升材料達固溶溫度前之升溫速率，縮短材料固溶化熱處理所需時間。在Portevin-Lechatelier (PL) 效應所引起之拉伸鋸齒流的臨界應變研究上發現，鹽浴快速加熱試片在拉伸鋸齒流中具有較大的臨界起始應變 (ɛc)，顯示快速加熱可提供更高濃度的溶質效果，使用SEM與TEM對快速熱處理試片進行觀察，證實臨界起始應變 (ɛc) 增加之現象與基地內之鎂、矽原子濃度有關。高濃度的固溶原子亦使得材料於後續人工熱處理中達峰值時效所需時間縮短，且材料延性相當並具有較佳之抗拉強度 (> 400MPa)。與傳統熱處理相比，藉以紅外線熱處理亦可使材料具有更大之ɛc，顯示快速熱處理可提高材料之固溶效果，並且這也在後續人工時效中增強了材料之機械強度。
在晶粒大小方面，由於在晶粒粗大化前即完成固溶熱處理，因此可使得材料維持在較小之晶粒大小尺度。除此之外，藉紅外線快速熱處理可縮小質量大小不同之熱鍛造材料在熱處理後之機械性質差異，並且在金屬流紋因晶粒成長而消失前即完成固溶，使得以紅外線熱處理之材料析出行為有別於傳統電阻加熱爐熱處理者進而可具有較高之材料楊氏模數。
另本研究亦導入鑄鍛製程，以鑄造材直接鍛造之6082鋁合金在傳統熱處理後並無粗大晶粒產生，且具有較高之硬度值; 材料在相同紅外線熱處理條件下亦仍保持無粗大晶粒且硬度值較高之特性，雖鑄鍛材之拉伸強度略低於擠鍛材，但鑄鍛材具有較佳之拉伸延性，此乃因鑄鍛與擠鍛材內部析出強化效能有所差異以及AlFe(MnCr)Si相之分布差異所導致。

Secondary recrystallization has been a serious problem for 6082 forgings, in this study, rapid heating methods (salt-bath and infrared heating) and cast-forging process are proposed to inhibit this phenomenon. Rapid heating can provide a better heating efficacy, shortening the heating time of solutionizing treatment. As a result, it can inhibit the re-precipitate of β-Mg2Si during the heating process. Moreover, the duration of solution treatment can be shortening. Because of the solutionizing duration shortened, the secondary recrystallization phenomenon was inhibited. Rapid heating method provides a higher concentration of Mg and Si solutes after the solution treatment. And the high concentration of Mg and Si solutes provide a better aging efficiency during the artificial aging process. As a result, the precipitates are smaller and denser than the resistance heating method after the T6 treatment. And these smaller and denser precipitates provide high tensile strength. Besides, using infrared rapid heating will shorten the difference of different size 6082 forgings after the same heat treatment. On the other hand, more β-AlFeSi phases remained after the cast-forging process, and these β-AlFeSi phases inhibits the secondary recrystallization phenomenon during the solution heat treatment process.

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