CAJ | 학술논문

研究了退火温度对成品板材组织、晶粒尺寸、室温力学性能的影响，并对板材进行了超塑拉伸试验研究。研究结果表明：在普通退火方式下，板材横纵向的抗拉强度和屈服强度随退火温度的升高而减小，延伸率呈现先增大后减小的趋势，在780℃时强度和塑性得到了良好的匹配；随退火温度的升高，初生α的晶粒尺寸略有增大。超塑拉伸试验结果表明：在温度为910℃，初始应变速率为4×10-4 s-1，板材最大延伸率达到789%。
연구료퇴화온도대성품판재조직、정립척촌、실온역학성능적영향，병대판재진행료초소랍신시험연구。연구결과표명：재보통퇴화방식하，판재횡종향적항랍강도화굴복강도수퇴화온도적승고이감소，연신솔정현선증대후감소적추세，재780℃시강도화소성득도료량호적필배；수퇴화온도적승고，초생α적정립척촌략유증대。초소랍신시험결과표명：재온도위910℃，초시응변속솔위4×10-4 s-1，판재최대연신솔체도789%。
The influences of annealing temperature on the microstructure, grain size and room temperature mechanical properties of TC4 titanium alloy sheet were studied. Also, the super plastic tensile test of the alloy sheet was investigated. The experimental results show that the tensile strength and yield strength of alloy sheet decreased with the raising of annealing temperature not only in transverse but also longitudinal. However, the elongation firstly increased and then decreased with the raising of annealing temperature. Then it can be seen that the optimal annealing temperature is 780℃because that the strength and elongation get a well match at this temperature. The grain size of primaryα increased slightly with the raising of annealing temperature. The maximum elongation of alloy sheet can be up to 789%at the superplastic tensile test conditions of 910℃annealing temperature and 4×10-4 s-1 initial strain rate.