Failure analysis of K-monel 500 (Ni-Cu-Al alloy) bolts

被引：11
|
作者：
Es-Said, OS [1 ]
Zakharia, K [1 ]
Zakharia, Z [1 ]
Ventura, C [1 ]
Pfost, D [1 ]
Crawford, P [1 ]
Ward, T [1 ]
Raizk, D [1 ]
Foyos, J [1 ]
Marloth, R [1 ]
机构：
[1] Loyola Marymount Univ, Dept Mech Engn, Los Angeles, CA 90045 USA
来源：
ENGINEERING FAILURE ANALYSIS | 2000年 / 7卷 / 05期
关键词：
age-hardening; grain growth; heat treatment; recrystallization;
D O I：
10.1016/S1350-6307(99)00031-X
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A bolt manufacturer used several subcontractors to fabricate K-monel 500 bolts. The completed bolts failed mechanical testing, and the manufacturer ascribed the failure to the bar stock. Testing contracted by the supplier of the bar stock showed that it met specifications. Metallographic testing described here shows that the bolts failed because of excessive grain growth and subsequent softening during heat treatment performed on the bolts after they were formed. Alternative heat treatments are discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：323 / 332
页数：10
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