检测了50kg铸锭级别的固溶强化型镍基高温合金Ni-20Cr-18W-Mo的弹性模量、泊松比、热膨胀系数、热导率、比热容等热物特性以及拉伸、抗氧化、高温蠕变等力学性能.通过对比分析发现Ni-20Cr-18W-Mo在高温条件下的热膨胀系数优于Haynes230等合金;1100℃时抗拉强度/延伸率可达到131MPa/66.2%,与公布的Haynes230合金最高强度值基本相当;1100℃时氧化速度为0.064g/(m2·h),为完全抗氧化级.
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