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小黑畢業(yè)了銀蟲 (初入文壇)
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[交流]
【求助】有沒有那位蟲友做過Zr的合金體系?請教Zr的相轉(zhuǎn)變問題!
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Sample Text 小妹現(xiàn)在在做Zr-Y體系的相圖,將合金在1200攝氏度下退火后淬火,然而合金挫粉后做XRD分析的結(jié)果,Zr、Y均沒有出現(xiàn)高溫相。╖r的相轉(zhuǎn)變溫度在880攝氏度左右,理論上至少Zr應(yīng)該出現(xiàn)高溫β相)。我對此很費解,請教各位高人,能不能幫我分析一下可能出現(xiàn)這種情況的原因(是不是實驗方法不對?Zr的相轉(zhuǎn)變速度特別快?兩相自由能相差不多,高溫β相極易向低溫相轉(zhuǎn)化?),改進的方法?或者告知我所不了解的Zr的特殊性質(zhì)? 小妹誠心求教,請各位大蝦幫幫我吧~~~。。 |
木蟲 (正式寫手)
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some suggestions: 1. carry out dilatometry test - determine the phase transformation temperatures. 2. carry out high temperature XRD Quenching is not always capable of preserving high temperature phases. |
銀蟲 (初入文壇)
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Thank you very much for your answer. I had made DSC detect, and get the phase transformation temperature of Zr is about 880 degree. but the transformation temperture of Y is not clear at region 800-1450 degree. there are not exsit a obvious peak, but just a unconspicuous wave. So I want to make some experiment to sure the high temperture phase. Do you have any good idears? |
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