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正交法研究添加Y2O3對Ti-6Al-4V合金組織與性能的影響
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廣州市對外科技合作項目(201704030094);廣東省科學院實施創(chuàng)新驅(qū)動發(fā)展能力建設專項(2018GDASCX-0117);廣東省科技計劃項目(2017A070702019,2017A050503004,2017A070701029);廣州市科技項目(201906040007)


Research on the Effect of Adding Y2O3 on Microstructure and Performance of Ti-6Al-4V Alloy by Orthogonal Experiment
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    摘要:

    采用正交實驗方法,應用放電等離子燒結(SPS)技術制備出Y_2O_3含量分別為0.2%、0.6%、0.8%的Ti-6Al-4V合金,探究燒結溫度、燒結壓力、Y_2O_3含量和保壓時間對Ti-6Al-4V合金顯微組織、燒結密度和力學性能的影響,優(yōu)化燒結工藝。結果表明,燒結溫度對燒結密度的影響最大,接下來依次為燒結壓力、Y_2O_3含量、保壓時間;燒結溫度對力學性能的影響最大,接下來依次為Y_2O_3含量、燒結壓力、保壓時間。當燒結溫度1 200℃、燒結壓力50 MPa、保壓時間5 min、Y_2O_3含量0.6%,燒結樣的密度和壓縮強度高,分別達到4.413 8 g/cm~3、1 881.4 MPa,相比未添加Y_2O_3的Ti-6Al-4V合金,其壓縮強度提高15.7%。

    Abstract:

    In this paper,the orthogonal experiment method and spark plasma sintering(SPS)technology were used to produce Ti-6Al-4V+x Y_2O_3 alloy,and the factors which affect the microstructure,density and mechanical properties of Ti-6Al-4V alloy,such as sintering temperature,sintering pressure,Y2O3content and soaking time were investigated.The results indicate that the degree of influence on density in turns are sintering temperature,sintering pressure,Y2O3content and soaking time.While for the mechanical properties,the orders are sintering temperature,Y_2O_3 content,sintering pressure and soaking time.When the sintering temperature is 1 200℃,pressure is 50 MPa,soaking time is 5 min,and Y_2O_3 content is 0.6%,the density and compressive strength of sintered samples can reach 4.413 8 g/cm3 and1 881.4 MPa respectively,which is much better than others.The compressive strength increases by 15.7%compared to the unadded Y2O3.

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羅鐵鋼;王昆昆;符乃科;李志.正交法研究添加Y2O3對Ti-6Al-4V合金組織與性能的影響[J].鈦工業(yè)進展,2020,37(1):32-36.

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  • 在線發(fā)布日期: 2024-02-22
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