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요약정보
QS87Mn线材断裂原因分析 / FRACTURE ANALYSIS OF QS87 Mn WIRE ROD
Resource Type
Academic Journal
Authors
季灿南
;
唐佳勇
;
张凤杰
;
乔佳川
;
姜翠萍
;
王晓兰
;
Ji Cannan
;
Tang Jiayong
;
Zhang Fengjie
;
Qiao Jiachuan
;
Jiang Cuiping
;
Wang Xiaolan
Source
河北冶金 / Hebei Metallurgy
. (8):63-66
Subject
QS87Mn
断裂
热处理
魏氏组织
网状铁素体
Language
Chinese
ISSN
1006-5008
Online Access
Find it @ DONGA
초록
针对QS87Mn线材在热处理后收线过程中出现断裂的现象,通过对试样进行系列热处理实验,并利用化学分析法及金相分析方法,对其化学成分、断口形貌和金相组织进行了分析.结果表明,因热处理温度过高或者保温时间过长,QS87Mn钢表层形成了魏氏组织,导致组织性能恶化,塑性变差,在收线过程中表面形成了裂纹源,裂纹扩展进而引起断裂.同时,线材表层的粗大网状铁素体也增加了断裂的几率.避免此类缺陷的产生,需严格控制热处理工艺参数,保证线材表层组织为均匀的索氏体.
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