| 热处理温度对冷变形Inconel625合金管组织及性能的影响 |
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| 引用本文： | 秦兴文,王坤,佴启亮,杜雷. 热处理温度对冷变形Inconel625合金管组织及性能的影响[J]. 金属热处理, 2021, 46(9): 164-169. DOI: 10.13251/j.issn.0254-6051.2021.09.030 |
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| 作者姓名： | 秦兴文 王坤 佴启亮 杜雷 |
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| 作者单位： | 浙江久立特材科技股份有限公司, 浙江 湖州 313028 |
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| 摘 要： | 通过金相分析、拉伸试验、硬度试验以及硝酸腐蚀试验,研究了热处理温度对Inconel625合金管组织、力学性能和腐蚀性能的影响.结果表明:热处理后合金组织基本为等轴晶,随着温度的升高,晶粒长大速率呈先慢后快的趋势,且晶粒长大激活能为144.14 kJ/mol;Inconel625合金管的抗拉强度、硬度随着热处理温度的升高...
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| 关 键 词： | Inconel625合金管 热处理温度 组织 力学性能 晶间腐蚀 |
| 收稿时间： | 2021-04-13 |
Effect of heat treatment temperature on microstructure and properties of cold deformed Inconel625 alloy pipe |
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| Qin Xingwen,Wang Kun,Nai Qiliang,Du Lei. Effect of heat treatment temperature on microstructure and properties of cold deformed Inconel625 alloy pipe[J]. Heat Treatment of Metals, 2021, 46(9): 164-169. DOI: 10.13251/j.issn.0254-6051.2021.09.030 |
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| Authors: | Qin Xingwen Wang Kun Nai Qiliang Du Lei |
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| Affiliation: | Zhejiang Jiuli Hi-Tech Metals Co., Ltd., Huzhou Zhejiang 313028, China |
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| Abstract: | Effect of heat treatment temperature on microstructure, mechanical properties and corrosion properties of the Inconel625 stainless steel pipe was studied through metallographic analysis, tensile experiment, hardness experiment and nitric acid corrosion experiment. The results show that the microstructure of the alloy is basically equiaxed grains after heat treatment. With the increase of temperature, the growth rate of grain size shows a trend of slow first and then fast. And the activation energy for grain growth is 144.14 kJ/mol. The tensile strength and hardness of the Inconel625 alloy pipe decrease with the increase of heat treatment temperature. And in the temperature range between 960-1160 ℃, the relationship between tensile strength, hardness and grain size abides by the Hall-Pecth relationship. With the increase of temperature, the fracture mode of the Inconel625 alloy changes from cleavage fracture to ductile fracture; and the rate of intergranular corrosion shows a trend that first decreases and then stabilizes. When the temperature is about 1080 ℃, the curves of hardness and elongation intersects, and the rate of intergranular corrosion are stable , which is the best heat treatment temperature. |
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| Keywords: | Inconel625 alloy pipe heat treatment temperature microstructure mechanical properties intergranular corrosion |
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