研究了常規(guī)雙級(jí)時(shí)效處理工藝（先低溫160℃,后高溫200℃）和反雙級(jí)時(shí)效處理工藝（先高溫200℃,后低溫160℃）對(duì)低壓砂型鑄造Mg-3Nd-0.2Zn-Zr（NZ30K）（wt.%）鎂合金的硬度和室溫拉伸性能的影響。結(jié)果表明,常規(guī)雙級(jí)時(shí)效處理對(duì)提高NZ30K合金的屈服強(qiáng)度效果不明顯,而反雙級(jí)時(shí)效處理能明顯提高NZ30K合金的屈服強(qiáng)度。經(jīng)200℃×16h+160℃×64h反雙級(jí)時(shí)效處理后,NZ30K合金獲得最佳綜合力學(xué)性能,硬度和屈服強(qiáng)度分別為75.7HV和161MPa。 

【文章來(lái)源】：材料科學(xué)與工程學(xué)報(bào). 2020,38(04)北大核心

【文章頁(yè)數(shù)】：8 頁(yè)

【文章目錄】：
1 Introduction
2 Experimental procedure
3 Results and Discussion
    3.1 Microstructure
    3.2 Hardness
        3.2.1 Hardness evolution during single-step aging treatment
        3.2.2 Hardness evolution during conventional twostep aging treatment
        3.2.3 Hardness evolution during reverse two-step aging treatment
    3.3 Tensile properties
    3.4 Discussion
4 Conclusion



本文編號(hào)：3027682