Quality Requirements for General Electric Ductile Iron Castings Exceeding 10T Used for Wind and Gas Turbine Components

摘要：

Nodular Ductile Iron(NDI)components>10T for gas or wind turbines frequently utilizes either ASTM A395 or ENl563(EN-GJS-400-18U-LT)material．This paper reviews the actual cast components beyond external damage and m Jcroshr Jnkage，and focuses on darkened metal(chunky graphite)exposed by rough or finish machining(where the machined plane has intersected a solidification hot spot)．Within the hot spot it will be shown that a chunky graphite morphological change has occurred．This will cause reductions in tensile and fatigue properties．Steps for identifying， investigating，and eliminating such indications are also discussed

关键词： nodular ductile iron chunky graphite dark spots wind turbines gas turbines low cycle fatigue UTS YS EL nodularity

作者: G．K．Bouse J.Parolini N．Rojek C．Zhou

作者单位: General Electric ENERGY，Materials ＆ Protests Engineering，Grenville，SC，USA General Electric ENERGY，Materials ＆ Protests Engineering，Warsaw，Poland General Electric ENERGY，Materials ＆ Protests Engineering，Shanghai，China

会议类型: 国际会议

会议名称: 69th World Foundry Congress(第69届世界铸造会议 WFC 2010)

会议地点: 杭州

会议语种:英文

页码: 889-893

在线出版日期: 2010-10-16（万方平台首次上网日期，不代表论文的发表时间）