AN INVESTIGATION OF PORE CRACKING IN TITANIUM WELDS

被引：0
作者：
KHALED, T
机构：
[1] Rockwell Int, Downey, United States
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 1994年 / 3卷 / 03期
关键词：
CRACK GROWTH; POROSITY; TITANIUM ALLOYS; SUSTAINED LOAD CRACKING; WELDING;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Two welded Ti-6Al-4V pressure vessels leaked prematurely in service. The leaks were caused by cracks emanating from weld porosity. The cracks originated during fabrication, with subsequent growth in service leading to the formation of the leak paths. Pore cracking is thought to be caused by a mechanism that involves both sustained-load and cyclic contributions, with the former being the more prominent. It is shown that the tendency for cracking is influenced by pore position and that pore size is not a deciding factor in that regard. The factors that govern pore cracking are discussed, and the possible role of interstitial embrittlement is assessed.
引用
收藏
页码：419 / 434
页数：16
相关论文
共 45 条
[1]  
Berger L., 1957, T ASM, V49, P300
[2]  
BERTIN YA, 1980, TITAMIUM 80 SCI TECH, P529
[3]  
BORGGREEN K, 1982, WELD J RES S, V61, P1
[4]   CHARACTERISTICS OF SUSTAINED-LOAD CRACKING AND HYDROGEN EFFECTS IN TI-6AL-4V [J].
BOYER, RR ;
SPURR, WF .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1978, 9 (01) :23-29
[5]  
BRADLEY JW, 1964, WELD J RES S, V43, P408
[6]  
CHESNUTT JC, 1980, TITANIUM 80, P1855
[7]  
COLLINS TE, 1992, SSD92D0248 ROCKW INT
[8]  
DANDREA MM, 1966, WELD J RES S, V45, P178
[9]  
EHRET RM, 1974, CR134597 NARA REP
[10]  
EVANS RM, 1964, DMIC194 BATT MEM I M
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