The Addition of Zr in Nickel-Based Inconel 718 Superalloy to Prevent Hot Cracks Propagation

摘要：

　　The Inconel 718 alloy owes high strength and ductility at high temperature due to precipitation strengthening.In order to upgrade productility of Inconel 718 alloy, the Inconel 718 alloy solve hot crackings through Zr additions.The result shows that, the Inconel 718 alloy with Zr addition achieves grain size refinement and homogenization effect.It is suggested that, homogenization process, such as temperature point and time control, realizes low content of Nb segregation which is the key to prevent hot crackings.At the same time, through dendrite space measurement, the grain refinement realize high productivity of forged Inconel 718 alloy, as a another method of soft effect.In conclusion, adding Zr element is one of dominant methods for producing high quality of Inconel 718 alloy.

关键词： Inconel 718 alloy Zr addition Nb segregation Hot cracking Grain refinement Homogenization

作者: Heng Zhao Qing-bin Liu Gang Lee Da-wei Yao

作者单位: National Functional Instrument Materials Research Center, Chongqing Materials Research Institute, Ch Research Center for Green Building Design, Yunnan Design Institute, Kunming, 650228, P.R.China Shanghai Electric Cable Research Institute, Shanghai, 200093, P.R.China

会议类型: 国际会议

会议名称: The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)

会议地点: 重庆

会议语种:英文

页码: 3-8

在线出版日期: 2016-07-25（万方平台首次上网日期，不代表论文的发表时间）