摘要
对不同化学成分的GH4738合金开展等温热处理实验,研究了合金成分对γ’相溶解规律的影响。实验结果表明,Al+Ti元素的含量是影响γ’相溶解温度的关键因素,随着Al+Ti元素含量的升高,γ’相的溶解温度也呈现出逐渐升高的趋势。此外,Mo、Cr、C等元素也通过影响Al、Ti元素在基体中的过饱和度来影响γ’相的溶解行为。当Mo、Cr含量较高时,会降低Al、Ti元素在基体中的溶解度,从而提高γ’相的溶解温度。而C元素通过与Al、Ti等元素形成碳化物,从而影响γ’相的溶解温度。
The isothermal treatment experiment was conducted on GH4738 alloy with different chemical composition,and the influence of alloy composition on the phase dissolution law was investigated. The results show that the content of Al+Ti plays an important role in determining the dissolution of γ’ phase. The dissolution temperature of γ’ phase increases with the increase of Al+Ti content. In addition, the elements of Mo, Cr and C also affect the dissolution behavior of γ’ phase according to supersaturation of Al and Ti in the matrix. While the Mo and Cr content in the matrix is high, which can decrease the solubility of Al and Ti in the matrix and then the dissolution temperature of γ’ phase is increased as a result. The dissolution temperature is also influenced by element C according to the formation of carbide with Al and Ti.
作者
刘湘斌
王涛
陈爽
韦康
付书红
李钊
万志鹏
LIU Xiangbin;WANG Tao;CHEN Shuang;WEI Kang;FU Shuhong;LI Zhao;WAN Zhipeng(Science and Technology on Advanced High Temperature Structural Materials Laboratory,AEEC Beijing Institute of Aeronautical Materials,Beijing 100095,China)
出处
《热加工工艺》
北大核心
2022年第12期93-96,共4页
Hot Working Technology
基金
国家重点研发计划项目(2021YFB3700405)。
