固溶处理对Inconel600镍基合金的硬度影响机理研究
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摘要
通过SEM、TEM、硬度测试仪等手段研究了固溶处理对电子束熔炼Inconel600镍基合金显微硬度的影响,并探讨了硬度变化机制。结果表明,低温固溶有利于二次相的析出,高温固溶对二次相体积分数影响甚微,且相尺寸未达到临界尺寸;1 200℃和1 250℃固溶+时效处理对Inconel600镍基合金的硬度影响不大,但电子束熔炼制备的材料较传统工艺材料的显微硬度显著提高。
The effect of solution treatment on microhardness of electron beam melting Inconel600 nickel-base alloy was studied by means of SEM, TEM and hardness tester, and the hardness changing mechanism was also investigated. The results show that the low temperature solution is avail to the precipitation of secondary phases, and the high temperature solution has little effect on volume fraction of secondary phases. The size of secondary phases is less than the critical size.There is a little influence on the hardness of nickel base Inconel600 alloy with 1 200 ℃ and 1 250 ℃ solution and aging treatment. However, the microhardness of the materials prepared by electron beam smelting is much higher than that of the traditional materials.
The effect of solution treatment on microhardness of electron beam melting Inconel600 nickel-base alloy was studied by means of SEM, TEM and hardness tester, and the hardness changing mechanism was also investigated. The results show that the low temperature solution is avail to the precipitation of secondary phases, and the high temperature solution has little effect on volume fraction of secondary phases. The size of secondary phases is less than the critical size.There is a little influence on the hardness of nickel base Inconel600 alloy with 1 200 ℃ and 1 250 ℃ solution and aging treatment. However, the microhardness of the materials prepared by electron beam smelting is much higher than that of the traditional materials.
引文
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[2]宋建丽,邓琦林,葛志军,等.镍基合金激光快速成形裂纹控制技术[J].上海交通大学学报,2006(3):548-552.
[3]谭毅,廖娇,李佳艳,等.电子束熔炼Inconel 740合金不同热处理状态下的组织演变与显微硬度[J].材料工程,2015(4):19-24.
[4]李宝忠.Inconel 600镍基合金管道的焊接试验[J].化学工程与装备,2008(6):56-58,67.
[5]Ho J S,Young T Y,Byung H S.A Study on the Welding Characteristics of Dissimilar Metal Using a High Power CW Nd:YAG Laser[J].Advanced Materials Research,2007,91(26):539-542.
[6]Min Y,Zeng D Z,Si L S.Effect of Interlayer Thickness on Strength and Fracture of Si and Inconel600 Joint[J].Key Engineering Materials,2005,528(297):2435-2440.
[7]王会阳,安云岐,李承宇,等.镍基高温合金材料的研究进展[J].材料导报,2011(S2):482-486.
[8]王健美.固溶处理温度对Inconel600合金组织和性能的影响[J].理化检验(物理分册),2014(7):487-489.
[9]游小刚,谭毅,魏鑫,等.固溶处理对电子束熔炼镍基740合金组织与硬度的影响[J].材料热处理学报,2015(12):90-97.
[10]张胜全,王玉慧.Inconel600合金元素偏聚及对组织影响的研究[J].热加工工艺,2015,44(12):120-122,127.
[11]王刚,尹立孟,姚宗湘,等.固溶处理对Inconel600合金TIG接头组织和性能的影响[J].热加工工艺,2017,46(5):221-224.
[12]韩宁宁,顾剑锋.核电用Inconel 600合金的蠕变行为[J].金属热处理,2016(6):1-3.
[13]白红军,丁五洲,李林.Inconel 600镍基合金热轧板表面起皮缺陷原因分析[J].中国钛业,2011(3):26-30.