Microstructure Evolution of a Single Crystal Nickel-Base Superalloy During Heat Treatment and Creep

被引：0
作者：
YANG Da-yun
机构：
来源：
材料热处理学报 | 2004年 / 05期
关键词：
nickel-base single crystal; superalloy; microstructure; heat treatment; tensile creep;
D O I：
暂无
中图分类号：
TG156 [热处理工艺];
学科分类号：
080201 ; 080503 ;
摘要：
Microstructure evolution of a single crystal nickel-base superalloy during heat treatment and tensile creep at 1010°C and 248 MPa for 30h was observed and analyzed. Internal stresses because of lattice mismatch between and / phase provided the driving force for / shape evolution during heat treatment. More than 65 vol. % distorted cubic phase keeping coherency with the y matrix precipitated after solution at 1295°C for 32h. The shape of phase was perfectly cubic with increasing precipitate size during the two-step aging treatment. Due to the applied stress and internal stress field the continuous y1/ lamellar structure perpendicular to the applied stress was formed after 30h tensile creep.
引用
收藏
页码：80 / 82
页数：3
相关论文
共 2 条
[1]   EFFECT OF INITIAL GAMMA PRIME SIZE ON THE ELEVATED-TEMPERATURE CREEP-PROPERTIES OF SINGLE-CRYSTAL NICKEL-BASE SUPERALLOYS [J].
NATHAL, MV .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1987, 18 (11) :1961-1970
[2]  
Elevated temperature creep-rupture behavior of the single crystal nickel-base superalloy NASAIR 100[J] . M. V. Nathal,L. J. Ebert.Metallurgical Transactions A . 1985 (3)
1