PH13-8Mo沉淀硬化不锈钢在航天火工装置中的应用
Application of PH13-8Mo Precipitation Hardening Stainless Steel in Aerospace Initiating Explosive Device
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摘要:为解决航天火工装置中常用高强钢存在易氢脆、裂纹敏感等问题，研究了回火温度分别为540℃及595℃ 2种热处理制度下PH13-8Mo沉淀硬化不锈钢的力学性能和抗爆炸冲击能力。测试发现回火温度540℃状态的PH13-8Mo钢具有较高的强度和较好的冲击韧性，能够代替30CrMniA或者30CrMnSiNi2A等常用高强钢材料。回火温度595℃状态的PH13-8Mo钢强度相对于回火温度540℃状态有所降低，但冲击韧性进一步提高，具有优异的抗爆炸冲击能力，适用于爆炸冲击防护要求高、承载能力要求相对较低的环节。
Abstract:In order to solve the problems such as hydrogen embrittlement and crack sensitivity of high-strength steel commonly used in aerospace initiating explosive device, the mechanical properties and explosion impact resistance of PH13-8Mo precipitation hardening stainless steel, which was heat treated under 540℃ and 595℃ tempering temperature were evaluated. It is found that PH13-8Mo steel under 540℃ tempering temperature has high tensile strength and good impact toughness, it can replace 30CrMnSiA or 30CrMnSiNi2A .The strength of PH13-8Mo steel treated under 595℃ tempering temperature is lower than that under 540℃ tempering temperature, but the impact toughness is further improved, which shows the excellent explosion impact resistance. It is suitable for links with high explosion impact protection requirements and relatively low bearing capacity requirements.
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