均匀化退火处理对因瓦合金铸锭组织及性能的影响  

Effect of homogenizing on microstructure and properties of Invar alloy ingot

作　　者：吴迎飞 孙中华 王育飞 王程明 张雲飞 彭会芬[2] Wu Yingfei;Sun Zhonghua;Wang Yufei;Wang Chengming;Zhang Yunfei;Peng Huifen(HBIS Group Technology Research Institute,Shijiazhuang Hebei 052165,China;School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河钢集团钢研总院,河北石家庄052165 [2]河北工业大学材料科学与工程学院,天津300130

出　　处：《金属热处理》2022年第2期130-136,共7页Heat Treatment of Metals

基　　金：国家自然科学基金面上项目(51671076);2019年河北省重点研发计划(19211012D);2019年河钢集团重点科技项目(HG2019208)。

摘　　要：通过对因瓦合金铸锭进行均匀化退火处理,探究退火处理对铸锭组织、热力学性能以及冲击性能的影响。结果表明,退火处理后,因瓦合金的铸态组织发生改变,成分偏析得到改善,室温冲击性能提升了约7倍;高温下变形抗力降低,高温热塑性得到改善,高温脆性区间下降,热加工的温度窗口变大,这有利于提高因瓦合金的热加工效率和成材率。Effect of heat treatment on microstructure, thermodynamic properties and impact property of Invar alloy ingot was investigated through homogenization annealing. The results show that after annealing treatment, the as-cast microstructure of the alloy is changed, the composition segregation is improved, the room temperature impact property is increased by about 7 times. Moreover, the high temperature deformation resistance is reduced, the high temperature thermoplasticity is improved, the high temperature brittleness range is reduced, and the thermal processing window becomes broader, all of which are beneficial to improve the efficiency and yield rate of hot working of the Invar alloy.

关 键 词：因瓦合金 偏析 高温热塑性 冲击性能 

分 类 号：TG132.1[一般工业技术—材料科学与工程]