时效对0Cr15Ni5Cu2Ti钢微观组织与力学性能的影响  被引量:32

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

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作  者:钟平[1] 夏明赟[2] 王俊丽[1] 黄万胜[2] 杨根林[1] 王丽[1] 

机构地区:[1]北京航空材料研究院,北京100095 [2]北京科技大学,北京100084

出  处:《航空材料学报》2003年第4期21-25,共5页Journal of Aeronautical Materials

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。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.

关 键 词:0Crl5Ni5Cu2Ti钢 微观组织 时效处理 力学性能 马氏体钢 沉淀硬化不锈钢 

分 类 号:TG142.71[一般工业技术—材料科学与工程]

 

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