恢复热处理对GH4145/SQ螺栓组织性能的影响  

Effect of Recovery Heat Treatment on Microstructure and Properties of GH4145/SQ Bolt Material

作　　者：阎光宗[1] 柯浩[1] 徐雪霞[1] 孔维刚[2] 

机构地区：[1]河北省电力研究院,河北石家庄050021 [2]神华河北国华定洲发电有限责任公司,河北定州07300

出　　处：《热加工工艺》2012年第14期206-208,共3页Hot Working Technology

摘　　要：对运行后硬度超标的镍基合金GH4145/SQ螺栓进行恢复热处理,并对恢复热处理前后的螺栓材料进行显微组织分析、力学性能检验。结果显示:硬度超标的螺栓塑韧性较差,恢复热处理后螺栓材料组织形貌及综合力学性能指标得到明显改善。A recovery heat treatment was used on nickle-based alloy GH4145/SQ bolt whose hardness was higher than the demand of the standard after service. The microstructure and mechanical properties of the bolt material before and after the recovery heat treatment were studied. The results show that the plastic and toughness of the bolt whose hardness is higher than the demand of the standard is lower, and the microstructure and mechanical properties of the bolt material are obviously improved through the recovery heat treatment.

关 键 词：镍基合金 恢复热处理 显微组织 力学性能 

分 类 号：TG166.7[金属学及工艺—热处理]