钒合金V-4Cr-4Ti焊接后力学性能研究
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- 英文论文题名：Mechanical properties of electron beam welded V-4Cr-4Ti
- 论文作者：杨爽 ; 谌继明 ; 郑鹏飞 ; 缪惺 ; 魏然 ; 王建豹
- 英文论文作者：YANG Shuang ; CHENG Ji-ming ; ZHENG Peng-fei ; MIAO Xing ; WEI Ran ; WANG Jian-bao ; Southwestern Institute of Physics
- 年：2015
- 作者机构：核工业西南物理研究院;
- 论文关键词：钒合金 ; 焊接 ; 力学性能 ; 冲击实验
- 英文论文关键词：vanadium alloy ; weld ; mechanical property ; impact test
- 会议召开时间：2015-09-21
- 会议录名称：中国核科学技术进展报告（第四卷）——中国核学会2015年学术年会论文集第5册（核材料分卷、辐射防护分卷）
- 语种：中文
- 分类号：TG456.3
- 学会代码：EGVD
- 会议名称：中国核学会2015年学术年会
- 会议地点：中国四川绵阳
- 主办单位：中国核学会
- 学会名称：中国核学会
- 页数：5
- 文件大小：435k
- 原文格式：O
- 会议级别：全国
摘要
将经过标准热处理(1 000℃,2 h)的V-4Cr-4Ti合金板材(炉号:SWIP-30)进行了电子束焊接,对焊前与焊后的板材分别加工制取1/3标准夏比冲击试样,通过冲击试验测试了不同温度条件下的试样冲击吸收功,确定了材料的韧脆转变温度,同时还测量了材料的表面硬度。对比焊前和焊后钒合金材料的硬脆转变温度和硬度,结果表明:电子束焊焊缝处的硬度比未焊区的硬度值高。电子束焊后钒合金板材的轫脆转变温度有较大增加,抗冲击性能较弱,需要通过热处理等强化方式改善材料的抗冲击性能。扫描电镜结果显示冲击试样断口主要为解理断裂。
The standard(STD) thermal treated vanadium alloy plates of V-4Cr-4Ti(SWIP-30) were vacuum electron beam welded,and then 1/3 size charpy specimens were machined from the welded plates with the v notch in the welded center.The charpy impact tests were done to measure the DBTT of welded materials and microhardness were also measured.By comparing with the results of base metal,the DBTT and microhardness of welded materials were much higher which need to be recovered by thermal strengthening method.The SEM results of the charpy specimen showed cleavage fracture.
The standard(STD) thermal treated vanadium alloy plates of V-4Cr-4Ti(SWIP-30) were vacuum electron beam welded,and then 1/3 size charpy specimens were machined from the welded plates with the v notch in the welded center.The charpy impact tests were done to measure the DBTT of welded materials and microhardness were also measured.By comparing with the results of base metal,the DBTT and microhardness of welded materials were much higher which need to be recovered by thermal strengthening method.The SEM results of the charpy specimen showed cleavage fracture.
引文
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[4]R V Steward,et al.Journal of Nuclear Materials[J].2000,283-287:1224.
[5]Y X Gan,et al.Journal of Nuclear Materials[J].2001,299:157.
[6]Y X Gan,et al.Journal of Materials Science Letters[J].2001,20:1909.
[7]J P Smith,et al.Journal of Nuclear Materials[J].1998,258-263:1420.
[8]H Y Fu,et al.Journal of Nuclear Materials 442(2013)S336-S340.