对激光近净成形两种镍基高温合金Inconel 625和Hastelloy C-276分别进行热处理实验,然后分析热处理工艺参数对合金室温拉伸性能的影响.结果分析表明:在800,900℃去应力热处理后,Inconel 625合金抗拉强度提升不明显,而在1000℃以上进行固溶处理后,合金抗拉强度得到提高.1100℃热处理后,Inconel 625合金的抗拉强度与沉积态相比得到明显提高.在800,900℃去应力热处理后,Hastelloy C-276合金强度也未明显提高,而在1000℃以上进行热处理,随着热处理温度提高,合金抗拉强度逐渐升高.1150℃进行热处理后,Hastelloy C-276合金的抗拉强度与沉积态相比得到明显提高.激光近净成形工艺制备的两种镍基高温合金室温拉伸断裂方式为韧性断裂.
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