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| 焊后热处理对13MnNiMoR钢焊接接头在服役环境下SCC敏感性的影响 | |
| 引用本文： | 姜亮亮,巩建鸣,耿鲁阳,韩冰,姜勇. 焊后热处理对13MnNiMoR钢焊接接头在服役环境下SCC敏感性的影响[J]. 压力容器, 2012, 29(4): 1-6 |
| 作者姓名： | 姜亮亮 巩建鸣 耿鲁阳 韩冰 姜勇 |
| 作者单位： | 1. 南京工业大学机械与动力工程学院,江苏南京,211816 2. 中国石化集团南京化学工业有限公司化工机械厂,江苏南京,210048 |
| 基金项目： | 中石化集团公司重大装备国产化项目 |
| 摘 要： | 通过慢应变速率拉伸试验（SSRT）,对比研究了经过焊后热处理和未经过焊后热处理的13MnNiMoR钢焊接接头在250℃下、不同pH值的锅炉水环境中的应力腐蚀开裂敏感性。结果表明：在相同应变速率、相同温度下,经过焊后热处理和未经过焊后热处理的13MnNiMoR钢焊接接头,应力腐蚀开裂敏感性有明显的区别。经过热处理的13MnNiMoR焊接接头应力腐蚀开裂敏感性随着pH值的增大而减小,相反,未经过热处理的接头,其敏感性随着pH值的增大而增大。研究结果表明,合理的焊后热处理能够显著降低焊接接头的应力腐蚀开裂敏感性。 |
| 关 键 词： | 热处理 pH 13MnNiMoR 应力腐蚀开裂 |
Influence of Post Heat-treatment on the Stress Corrosion Cracking Sensitivity of 13MnNiMoR Weld Joints in Service Condition |
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| JIANG Liang-liang , GONG Jian-ming , GENG Lu-yang , HAN Bing , JIANG Yong. Influence of Post Heat-treatment on the Stress Corrosion Cracking Sensitivity of 13MnNiMoR Weld Joints in Service Condition[J]. Pressure Vessel Technology, 2012, 29(4): 1-6 | |
| Authors: | JIANG Liang-liang GONG Jian-ming GENG Lu-yang HAN Bing JIANG Yong |
| Affiliation: | 1.College of Mechanical and Power Engineering,Nanjing University of Technology,Nanjing 211816,China;2.SINOPEC Nanjing Chemical Industrial Co.,Ltd.,Chemical Machinery Works,Nanjing 210048,China) |
| Abstract: | The stress corrosion cracking（SCC） sensitivity of 13MnNiMoR weld joints,heat-treated and unheat-treated,in boiler water with varied pH value under the temperature of 250 ℃ were discussed through slow stress rate testing.The result shows that post weld heat treatment caused great discrepancy in SCC sensitivity of the joints under the same temperature and same strain rate.The SCC sensitivity of heat-treated joint decreases as the pH value of water increases,while the SCC sensitivity of unheat-treated joint increases.The result indicats that reasonable post heat treatment can reduce the SCC sensitivity of weld joint obviously. |
| Keywords: | heat treatment pH 13MnNiMoR stress corrosion cracking |
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