研究經(jīng)T6時(shí)效熱處理的模鍛態(tài)Al-5.87Zn-2.07Mg-2.42Cu合金從室溫升高到250℃時(shí)的高溫力學(xué)性能和顯微組織。高溫拉伸試驗(yàn)結(jié)果表明,隨著拉伸溫度從室溫升高到250℃,合金的抗拉強(qiáng)度從638降至304 MPa,伸長(zhǎng)率從13.6%升至20.4%。通過(guò)透射電子顯微鏡和電子背散射衍射技術(shù)對(duì)合金的顯微組織進(jìn)行表征。研究發(fā)現(xiàn),隨著拉伸溫度的升高,析出相發(fā)生粗化,位錯(cuò)密度逐漸降低,合金組織發(fā)生不同程度的動(dòng)態(tài)回復(fù)。在250℃進(jìn)行拉伸時(shí),合金內(nèi)形成許多由小角度晶界組成的亞晶組織。 

【文章來(lái)源】：Transactions of Nonferrous Metals Society of China. 2020,30(07)EISCICSCD

【文章頁(yè)數(shù)】：9 頁(yè)

【文章目錄】：
1 Introduction
2 Experimental
3 Results
    3.1 Mechanical properties
    3.2 Fracture morphology
    3.3 Dislocation morphology
    3.4 Precipitates morphology
    3.5 Dynamic recovery behavior during high temperature tensile test
4 Discussion
    4.1 Precipitate states of alloy during high temperature tensile test
    4.2 Dynamic recovery of alloy during high temperature tensile test
    4.3 Effect of microstructure on mechanical properties
5 Conclusions


【參考文獻(xiàn)】：
期刊論文
[1]固溶-大變形-時(shí)效下7085鋁合金的強(qiáng)化機(jī)理[J]. 許曉靜,王子路,陸文俊,郭云飛,馬文海,陳洋,徐馳,張景玉.  稀有金屬材料與工程. 2017(04)



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