摘要
CLAM钢是中国ITER液态测试包层模块的首选结构材料,其塑性是影响测试包层冷却流道加工制造的关键因素之一。本文对CLAM钢进行退火软化热处理,测试其拉伸性能,并研究经过5%、10%和15%预变形,均分别在600℃、700℃和800℃回火30 min后,CLAM钢塑性的回复情况,以获得预变形量和回火工艺与CLAM钢塑性之间的关系,为制备包层模块及其冷却流道提供材料技术支持。研究表明:退火态CLAM钢塑性较正常热处理态CLAM钢有较大提高,在预变形和回火过程中,其塑性随预变形量的增大而下降,随回火温度的上升而提高。
China low activation martensitic(CLAM) steel is the primary structural candidate material of ITER DFLL-TBM(Test Blanket Module) in China,and its plasticity is the key issue to fabricate helium cooling channels of TBM.In this paper,CLAM steel was annealed,and influence of pre-elongation and heat treatment on plasticity of as-annealed CLAM steel was studied.CLAM steel were elongated for 5%,10% and 15% respectively,then tempered at 600 ℃,700 ℃,800 ℃ for 30 min,and tensile properties of tempered CLAM steel were tested.The results showed that plasticity of as-annealed CLAM steel was better than that of functioning state CLAM steel,and plasticity of pre-elongated CLAM steel increased,with the drop of pre-elongation,and with the increase of tempering temperature.
出处
《核科学与工程》
CSCD
北大核心
2010年第2期160-165,共6页
Nuclear Science and Engineering
基金
国家自然科学基金项目(50805138和10775135)
中科院合肥战略能源和物质科学大型仪器区域中心建设项目(085ZB2R292)
中国科学院合肥物质科学研究院知识创新工程领域前沿项目(075FCQ012A)
中国科学院知识创新工程重要方向项目(KJCX2-YW-N35)
ITER计划专项国内配套研究项目(2009GB109000)