风电铸件用高强高韧球墨铸铁材料的研发与应用  

Development and Application of High Strength and Toughness Nodular Cast Iron Materials for Wind Power Castings

作　　者：唐斌 阳雪兵 TANG Bin;YANG Xuebing(Harbin Electric Corporation Wind Power Co.,Ltd.,Xiangtan 411101,Hunan China;National Key Laboratory of Offshore Wind Power Equipment and Efficient Utilization of Wind Energy,Xiangtan 411101,Hunan China)

机构地区：[1]哈电风能有限公司,湖南湘潭411101 [2]海上风力发电装备与风能高效利用全国重点实验室,湖南湘潭411101

出　　处：《铸造工程》2023年第3期30-33,共4页Foundry Engineering

摘　　要：为获得更高强度更高韧性的低温型球墨铸铁材料,在QT400-18AL材料中加入合金元素Ni、Nb进行合金化;通过对试样力学性能、金相组织、低温冲击功、疲劳性能的检测可知,Ni、Nb合金化可大幅提高QT400-18AL材料的力学性能。同时,使用该合金化QT400-18AL材料,达到了铸件质量提高与成本降低的双重目的。In order to obtain higher strength and toughness of low temperature ductile iron,alloy elements Ni and Nb were added into QT400-18AL for alloying.The mechanical properties,metallographic structure,low temperature impact energy and fatigue properties of the samples are tested.It can be seen that Ni and Nb alloying can greatly improve the mechanical properties of QT400-18AL material.At the same time,the double purpose of improving casting quality and reducing cost is achieved by using the alloying QT400-18AL material.

关 键 词：风电铸件 球墨铸铁 合金化 高强高韧 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]