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1Cr17Ni2钢U和V形缺口试样夏比冲击性能对比

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Indexed by: Journal Article

Date of Publication: 2014-12-30

Journal: 材料热处理学报

Included Journals: ISTIC、PKU

Volume: 35

Issue: z2

Page Number: 70-74

ISSN: 1009-6264

Key Words: 1Cr17Ni2钢;冲击吸收功;断口形貌;断面纤维率

Abstract: 对比了不同热处理工艺下1Crl7Ni2钢U、V形缺口试样夏比冲击试验的冲击吸收功、断口形貌和断面纤维率.结果表明在本试验热处理条件下,U形试样AKU2值符合国标要求,但V形试样AKV2值低,二者之间没有确切对应关系;断口形貌分析表明断口中的纤维状断面为韧性断口特征,结晶状断面为解理断裂与沿晶断裂混合的脆性断口特征;U形缺口试样断口的断面纤维率比V形缺口试样高.V形缺口试样更能反映出1Cr17Ni钢的脆性开裂倾向,当1Cr17 Ni2钢的服役环境对冲击性能要求较高时用AKV2值评定其韧脆性更加可靠.

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