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材料工程  2013 

热处理对Ti-35V-15Cr-0.15Si-0.05C合金热稳定性能的影响

DOI: 10.3969/j.issn.1001-4381.2013.07.014, PP. 73-77

Keywords: 阻燃钛合金,微观组织,热暴露,α相,碳化物

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Abstract:

通过对Ti-35V-15Cr-0.15Si-0.05C合金轧制环件取样进行热处理和热稳定性能实验,研究了850℃和950℃固溶处理和950℃固溶后在600℃和700℃实效后的热稳定性能和微观组织。结果表明合金仅经过固溶处理α相析出不明显,而经过固溶加时效处理后α相在晶界和晶内大量析出,在热稳定性能测试时,经过540℃100h热暴露后,α相进一步析出。合金α相是影响合金拉伸性能的主要因素,在晶界析出的连续α相导致合金塑性急剧下降;通过850℃固溶热处理能够获得较好的室温拉伸和热稳定性能。

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