DZ125合金表面Ce-Y改性铝化物渗层的热冲击性能研究  

Research on Thermal Shock Resistance of Ce-Y Jointly Modified Aluminide Coatings Prepared on DZ125 Alloy Surface

作　　者：郭诗琪 田兴达 李宁 陆思萍 冯浩 王存喜 李涌泉 GUO Shiqi;TIAN Xingda;LI Ning;LU Siping;FENG Hao;WANG Cunxi;LI Yongquan(College of Material Science&Engineering,North Minzu University,Yinchuan 750021,China;School of Mechatronic Engineering,North Minzu University,Yinchuan 750021,China)

机构地区：[1]北方民族大学材料科学与工程学院,宁夏银川750021 [2]北方民族大学机电工程学院,宁夏银川750021

出　　处：《热加工工艺》2023年第22期59-61,共3页Hot Working Technology

基　　金：宁夏大学生创新创业训练计划项目(S2020-11407-006);国家级大学生创新创业训练计划项目(S2020-11407-001G);宁夏自然科学基金项目(2020AAC02025);宁夏高等学校科学技术研究项目(NGY2018-147)。

摘　　要：采用扩散渗法于950℃下扩散渗2 h后在DZ125镍基合金表面制备了Al-Ce-Y渗层,研究了Al-Ce-Y渗层试样和基体合金的热冲击性能,分析了热冲击裂纹的形态结构。结果表明:在实验条件下,DZ125合金基体和Al-Ce-Y渗层试样出现可视裂纹的热冲击次数分别为195、184次。该过程中渗层结构保持完整,无剥落现象,表明Al-Ce-Y渗层可满足DZ125合金对抗热冲击性能的服役要求。Al-Ce-Y coatings on DZ125 alloy were prepared by pack cementation process at 950℃for 2 h.The thermal shock resistance of DZ125 alloys with and without Al-Ce-Y coatings was studied.The microstructure of the cracks caused by thermal shock was analyzed.The results show that the visible cracks of DZ125 alloy and Al-Ce-Y coatings are detected after thermal shock with 195 and 184 times,respectively.Moreover,the structure of Al-Ce-Y coatings is kept intact without peeling off during the thermal shock process,which means that the Al-Ce-Y layer can meet the service requirements of thermal shock resistance of DZ125 alloy.

关 键 词：DZ125合金 涂层 热冲击 

分 类 号：TG132.3[一般工业技术—材料科学与工程] TG174[金属学及工艺—合金]