时效温度对Ti-5Mo-5V-6Cr-3Al热轧管材组织性能的影响  

Effect of Aging Temperature on Microstructure and Properties of Hot-rolled Ti-5Mo-5V-6Cr-3Al Tube

作　　者：吴楠[1] 魏衍广[1] 崔雪飞[1] 陶海明[1] 罗峥[1] WU Nan;WEI Yanguang;CUI Xuefei;TAO Haiming;LUO Zheng(Powder Metallurgy&Special Materials Research Department,General Research Institute of Non-ferrous Metals,Beijing 100088)

机构地区：[1]北京有色金属研究总院粉末冶金及特种材料研究所,北京100088

出　　处：《材料导报》2017年第A01期524-527,545,共5页Materials Reports

摘　　要：通过扫描电镜(SEM)和X射线衍射分析(XRD)等手段对新型Ti5563合金热轧态管材经固溶时效和时效处理后的组织及物相含量进行了分析,比较了不同热处理后合金的力学性能,研究了时效温度对材料组织和力学性能的影响。结果表明:直接时效处理是提高Ti5563合金热轧态管材综合性能较为有效的方法;在520~660℃时效处理时,温度越低,α析出相越多,尺寸越小,分布越弥散,合金强度越大;随着温度增加,α析出相减少且尺寸变大,强化作用减弱,合金的塑性增加。Microstructure and phase content of Ti-5Mo-5V-6Cr-3Al alloy after solution-aging treatment and aging treatment were analyzed by scanning electronic microscope(SEM)and X-ray diffractometer(XRD).Furthermore,the mechanical properties of alloy manufactured by different heat treatment methods were studied.The results show that aging treatment is a more effective way to improve the strength and toughness of Ti5563 alloy.Besides,aging temperature strongly influences the properties of Ti5563 alloy.When aging temperature is located within the range of 520 to 660℃,lower aging temperature will lead to moreαprecipitated phase,and higher strength of Ti5563.While on the contrary,higher aging temperature will lower theαphase content,enlarge its size,and as a result,attenuate the strengthening effect and increase the alloy′s plasticity.

关 键 词：Ti5563合金 直接时效 时效温度 α析出相 

分 类 号：TG146.23[一般工业技术—材料科学与工程]