中国钼业2018，Vol.42Issue(1)：47-50,4.DOI:10.13384/j.cnki.cmi.1006-2602.2018.01.010
退火处理对电真空器件用钼棒组织及力学性能的影响
EFFECT OF ANNEALING TREATMENT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF MOLYBDENUM BAR FOR VACUUM DEVICE
王娜 1张晓 1席莎 1安耿 1卜春阳 2付静波 1王磊1
作者信息
- 1. 金堆城钼业股份有限公司技术中心,陕西西安710077
- 2. 西安交通大学金属材料强度国家重点实验室,陕西西安710049
- 折叠
摘要
Abstract
The diameter of 3 mm molybdenum bar of vacuum electronic device was prepared by powder metallurgy and swaging method, and the effect of annealing temperature on the microstructure and the mechanical properties of the molybdenum bar was discussed.The results show that, when the deformation of molybdenum bar reaches 90%,the recrystallization temperature of molybdenum bar appears at 1 000 ~1 050 ℃; before 1 000 ℃, with the increase of annealing temperature, the microstructure of molybdenum bar fiber becomes wider and the fiber lap decreases.At this stage, the tensile strength of molybdenum rods decreases and the elongation increases gradually,and the microstructure of molybdenum rod fibers decreases gradually at 1 000 ~1 200 ℃.The mechanical properties of molybdenum bar is optimized when the annealing process is 950 ℃ for 1 h, the tensile strength reaches the maximum value of 777 MPa, the elongation reaches the maximum value of 49.5%, the mechanical performance is better than the ASTM standard of USA.关键词
钼棒/退火处理/组织/力学性能Key words
molybdenum bar/annealing treatment/microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
王娜,张晓,席莎,安耿,卜春阳,付静波,王磊..退火处理对电真空器件用钼棒组织及力学性能的影响[J].中国钼业,2018,42(1):47-50,4.
