| 乙二醇不锈钢蒸发器开裂原因分析 |
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| 引用本文： | 冯娟,巩建鸣,张礼敬,涂善东.乙二醇不锈钢蒸发器开裂原因分析[J].理化检验(物理分册),2004,40(8):411-414. |
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| 作者姓名： | 冯娟 巩建鸣 张礼敬 涂善东 |
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| 作者单位： | 1. 南京工业大学机械与动力工程学院,南京,210009
2. 华东理工大学机械工程学院,上海,200237 |
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| 基金项目： | 中石化总公司科技开发项目(02JSNJYZ101019) |
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| 摘 要： | 采用金相分析、断口微观分析以及腐蚀产物能谱分析等方法，对某石化公司乙二醇不锈钢蒸发器开裂原因进行了分析和研究。结果表明，由于材料在焊接过程中，焊接热影响区的组织受到敏化，铬的碳化物沿晶界呈网状析出，造成该区域贫铬，从而在应力与腐蚀介质的共同作用下，导致设备发生了晶问应力腐蚀开裂。
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| 关 键 词： | 蒸发器 不锈钢 晶间应力腐蚀开裂 金相检验 失效分析 |
| 文章编号： | 1001-4012(2004)08-0411-04 |
CRACKING ANALYSIS OF THE GLYCOL EVAPORATORS WHICH MADE OF STAINLESS STEEL |
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| FENG Juan,GONG Jian-ming,ZHANG Li-jing.CRACKING ANALYSIS OF THE GLYCOL EVAPORATORS WHICH MADE OF STAINLESS STEEL[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2004,40(8):411-414. |
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| Authors: | FENG Juan GONG Jian-ming ZHANG Li-jing |
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| Abstract: | In the present paper, the cracking behavior of glycol evaporator which made of stainless steel was studied by metallographic analysis, energy spectrum analysis of the corrosion product and fracture analysis of the failure samples. The results show that the microstructure near the welding heat affective zone is sensitized due to the welding process, which leads to the precipitation of chromium carbide along grain boundary and the lack of Cr precipitation near grain boundary. Furthermore, under the combined action of the stress and corrosive medium, the intergranular stress corrosion cracking takes place in welding heat affective zone of the glycol evaporator. |
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| Keywords: | Evaporator Stainless Steel Intergranular stress corrosion cracking metallographic test Failure analysis |
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