摆锤刀刃半径对夏比V型冲击吸收能量的影响  

Effects of Pendulum Striking Edge Radii on Charpy V-nothch Impact Absorbed Energy

作　　者：刘永飞[1] 王平怀[1] 刘宏亮[1] 赵献益 

机构地区：[1]宝鸡石油机械有限责任公司,宝鸡721002 [2]中国石油天然气第六建设公司,桂林541004

出　　处：《理化检验（物理分册）》2016年第4期239-242,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：为研究不同尺寸摆锤刀刃锤头对冲击试验结果的影响,采用刀刃圆角半径分别为2mm和8mm的锤头对多种材料进行夏比V型冲击试验,并从吸收能量、断口形貌等方面分析V型缺口试样在2mm摆锤刀刃下的冲击吸收能量K_(V2)与8mm摆锤刀刃下的冲击吸收能量K_(V8)的变化规律,研究摆锤刀刃尺寸对夏比V型冲击吸收能量的影响。结果表明:在韧脆转变温度曲线上平台区和转变区(塑性断口)范围内,K_(V8)大于K_(V2);在转变区(脆性断口)范围内,K_(V2)大于K_(V8);在下平台区,KV8与K_(V2)几乎相等。In order to study the effects of pendulum striking edge radii on the impact test results,Charpy V-notch impact test was carried out to variety materials with 2 mm and 8 mm pendulum striking edge radii.By analyzing the variation rules of K_（V2）（the impact absorbed energy with 2mm pendulum striking edge radius）and K_（V8）（the impact absorbed energy with 8mm pendulum striking edge radius）from the aspect of impact absorbed energy and fracture morphology,the effects of pendulum striking edge radii on the Charpy impact absorbed energy were studied.The results show that in the range of top platform and transition zone（plastic fracture）of the ductile-brittle transition temperature curve,K_（V8） was higher than K_（V2）.In the transition zone（brittle fracture）,K_（V2） was higher than K_（V8）.However,in the lower platform zone,K_（V2） and K_（V8） were almost equal.

关 键 词：摆锤刀刃半径 冲击吸收能量 断口形貌 韧脆转变温度曲线 

分 类 号：TG115.5[金属学及工艺—物理冶金]