Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第23卷    第z1期    总第1期    2013年12月

[PDF全文下载]        

    

文章编号:1004-0609(2013)S1-0374-07
TC4薄壁壳体焊缝裂纹分析
柳 军,刘志颖,晏阳阳,王 洋,胡光远

(洛阳船舶材料研究所,洛阳 471039)

摘 要: 采用氮氢氧气体分析仪、金相显微镜、扫描电子显微镜及能谱仪、显微硬度计、三维视频显微镜分析壳体焊缝三维裂纹外观、裂纹抛光形态、裂纹低倍形态、裂纹横截面形貌、裂纹附近显微硬度、内壁裂纹形态、裂纹断口形貌。结果表明:薄壁壳体穿透型裂纹为氢脆导致的延迟开裂失效,是典型的氢致裂纹现象,这主要是焊前清理不当、焊后没有及时热处理以及酸洗后没有进行去氢热处理造成的。

 

关键字: 钛合金;焊缝;裂纹;氢脆;热处理

Analysis of TC4 thin-walled shell weld crack
LIU Jun, LIU Zhi-ying, YAN Yang-yang, WANG Yang, HU Guang-yuan

Luoyang Ship Material Research Institute, Luoyang 471039, China

Abstract:The shell weld appearance, three-dimensional crack morphology, polishing form low times, crack cross section morphology, microhardness, near the crack wall crack, crack fracture surface morphology were analyzed by using nitrogen hydrogen gas analyzer, metallographic microscope, scanning electron microscope and energy spectrum instrument, microhardness tester, three-dimensional video microscopy. The results show that thin-walled shell penetrated crack for hydrogen embrittlement of the delayed cracking failure is typical of the hydrogen induced cracking phenomenon. It is improper cleaned before welding, welding not timely heat treatment and pickling is not caused by heat treatment to hydrogen.

 

Key words: titanium alloy; weld metal; cracking; hydrogen embrittlement; heat treatment

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com