时效对0Cr15Ni5Cu2Ti钢微观组织与力学性能的影响

Effect of aging on microstructure and mechanical properties of 0Cr15Ni5Cu2Ti steel

摘要: 研究了960℃和1000℃固溶处理后,时效对马氏体沉淀硬化不锈钢0Cr15Ni5Cu2Ti微观组织与力学性能的影响。钢采用960℃和1000℃固溶处理,在455～460℃时效冲击值出现最低值,断口表现为准解理。强度和硬度在460℃时效出现峰值。主要与组织中细小富铜相共格析出有关。时效温度增加,富铜相长大,强度和硬度降低。
- 时效 /
- 富铜相 /
- 力学性能
Abstract: The effect of aging on microstructure and mechanical properties of martensitic precipitation hardening stainless steel 0Cr15Ni5Cu2Ti were examined. The impact toughness of aging at 455～460℃ was lowest. The maximum ultimate tensile strength and hardness were reached after aging at 460℃ due to the precipitation of coherent phase of fine copper-rich particles.Aging at higher temperatures resulted in loss of strength and hardness and these were attributed to the result of precipitate coarsening.
- aging /
- copper-rich phase /
- mechanical properties

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