On the mechanism of quench cracking in Rene 95 nickel-based superalloy

被引：13

作者：

Kane, WM ^{[1
]}

Krupp, U

Jacobs, T

McMahon, CJ

机构：

[1] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[2] Univ Siegen, Inst Werkstofftech, D-57068 Siegen, Germany

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2005年 / 402卷 / 1-2期

关键词：

Rene; 95; quench cracking; dynamic embrittlement; nickel plating;

D O I：

10.1016/j.msea.2005.05.032

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The mechanism of quench cracking in the nickel-based superalloy Rene 95 has been investigated. Rapid cooling of notched tensile bars loaded with fixed grips was used to mimic a quench. Failures occurred by brittle intergranular fracture in air, but by 'rupture and at higher stress in vacuum. The brittle intergranular fracture in air was recognized as dynamic embrittlement. Nickel-plating of sufficient thickness was found to eliminate cracking when Rene 95 was water-quenched from above the gamma' solvus temperature. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：42 / 46

页数：5

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