【摘要】 采用粉末冶金与电子束熔炼法制备纯钽锭坯,坯料经过锻造、轧制成0.3 mm板材,测定了2种方法制备的纯钽的再结晶温度,研究了不同再结晶退火工艺对晶粒大小及其深冲性能的影响。结果表明,粉末冶金法制备的纯钽片的再结晶温度为1200℃,电子束熔炼的纯钽片的再结晶温度为800~900℃。2种钽片分别采用不同的退火工艺都可获得50~100μm的晶粒,其深冲件的表面质量良好。更多还原

【Abstract】 The powder metallurgy and electron-beam melting methods were used to prepare tantalum blanks.Tantalum sheets with a thickness of 0.3 mm were produced through forging and rolling of the as-obtained blanks.The recrystallization temperatures of the two kinds of pure tantalum were measured and the effects of the different recrystallized annealing process on the grain size and deep-drawn performance was studied.The results show that the recrystallization temperature of the powder metallurgic tantalum sheets is 1200 ℃,and the electron-beam melting tantalum sheets is ranged from 800 ℃ to 900 ℃.The grain size of 50～100 μm can be achieved by the two methods if different annealing process was used,and the surface quality of the deep-drawn parts are fine.更多还原