Preliminary study on the performance of hot isostatic pressing diffusion welding joint for low activation martensitic (CLF-1) steel

doi:10.16568/j.0254-6086.201803017

NUCLEAR FUSION AND PLASMA PHYSICS ›› 2018, Vol. 2 ›› Issue (3): 344-349.DOI: 10.16568/j.0254-6086.201803017

• Nuclear Fusion Engineering and Technology • Previous Articles Next Articles

Preliminary study on the performance of hot isostatic pressing diffusion welding joint for low activation martensitic (CLF-1) steel

HU Zhi-qiang, ZHAO Feng-chao, ZHAO Zhou, LIAO Hong-bing, WU Xin-hua, WANG Xiao-yu, FENG Kai-ming

(Southwestern Institute of Physics, Chengdu 610041)

Received:2017-09-28 Revised:2018-06-25 Online:2018-09-15 Published:2018-09-14

低活化马氏体钢热等静压焊接接头性能初步研究

胡志强，赵奉超，赵周，廖洪彬，武兴华，王晓宇，冯开明

(核工业西南物理研究院，成都 610041)

作者简介:胡志强(1985-)，男，四川自贡人，硕士，工程师，主要从事聚变堆设计及材料研究。
基金资助:
国家磁约束核聚变能发展研究专项(2014GB112003)；国家重点研发计划(2017YFE0300601)

Abstract

Abstract:

The performance of hot isotopic pressing (HIP) welded joint for low activation martensitic (CLF-1) steel was studied preliminarily. The welded joint organization was keeping tempered martensite after heat treatment at 980℃/1h/air cooling+ 740℃/2h/air cooling. The room temperature tensile properties of welded joint were similar as the base metal, the dimpled fracture and the secondary particles were produced, which was plastic fracture and cracked at welded joint. The room temperature impact energy of welded joints was 26.2% of base metal. Preliminarily results indicated that the non-uniformity of HIP interface diffusion layer, sensitivity enhancement of welded joint crack, impact work reduction and some instabilities would be resulted from the incomplete matrix atoms diffusion due to the undesirable surface processing state, harmful surface contaminants, surface cleaning condition, oxide film etc.

Key words: Fusion blanket, Low activation, CLF-1 steel, Hot isotopic pressing (HIP) welding

摘要：

研究了低活化马氏体钢(CLF-1)热等静压(HIP)焊接接头的性能，经980℃/1h/空冷+740℃/2h/空冷的性能热处理后，接头组织保持着CLF-1钢母材回火马氏体组织；常温拉伸性能与母材相当，断口为韧窝状且有第二相粒子产生，为塑性断裂且断于焊缝；常温冲击功最高为母材的26.2%。初步分析认为焊接表面制备状态、表面污染物、表面清洗状态、表面氧化膜都会影响基体原子充分扩散，导致界面扩散层不均匀，焊缝裂纹敏感性增强，冲击功低，且不稳定。

关键词: 聚变包层, 低活化, CLF-1钢, 热等静压焊接

CLC Number:

TG453

HU Zhi-qiang, ZHAO Feng-chao, ZHAO Zhou, LIAO Hong-bing, WU Xin-hua, WANG Xiao-yu, FENG Kai-ming. Preliminary study on the performance of hot isostatic pressing diffusion welding joint for low activation martensitic (CLF-1) steel[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2018, 2(3): 344-349.

胡志强，赵奉超，赵周，廖洪彬，武兴华，王晓宇，冯开明. 低活化马氏体钢热等静压焊接接头性能初步研究[J]. 核聚变与等离子体物理, 2018, 2(3): 344-349.

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Preliminary study on the performance of hot isostatic pressing diffusion welding joint for low activation martensitic (CLF-1) steel

低活化马氏体钢热等静压焊接接头性能初步研究

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