【摘要】：通過Manson公式研究了蠕變壽命與高溫疲勞蠕變壽命之間的關(guān)系,并分別在600~700℃下對1Cr18Ni9Ti進(jìn)行高溫疲勞蠕變和蠕變試驗,研究了溫度對蠕變壽命的影響。采用SEM進(jìn)行斷口形貌觀察及EDS能譜分析。結(jié)果表明:理論預(yù)測壽命均在實測壽命的2倍誤差帶內(nèi),證明了將高溫疲勞蠕變壽命預(yù)測轉(zhuǎn)換成蠕變壽命預(yù)測的可行性;試驗溫度高于625℃后對蠕變壽命的影響顯著;斷口處有大量的孔洞和氧化物出現(xiàn),氧化薄膜周圍容易形成裂紋源。
[Abstract]:The relationship between creep life and high temperature fatigue creep life was studied by means of Manson formula. The high temperature fatigue creep and creep tests of 1Cr18Ni9Ti were carried out at 600 鈩，

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