材料期刊网

CRITICAL NOTCH(CRACK)SIZE AS A CHARACTERISTIC PARAMETER EVALUATING CRYOGENIC BRITTLENESS IN LOW CARBON STEEL

LI Daoming YAO Mei Harbin Institute of Technology , Harbin , China Box 617 , Harbin Institute of Technology , Harbin , China

金属学报(英文版)

The effect of notch depth on the cryogenic fracture behavior has been studied using a low car- bon steel.An analysis was made for the fracture features at T_c~*(cryogenic brittleness-char- acteristic temperature)at which the facture load reaehes a valley value.Furthermore,accord- ing to the experime...

关键词: low carbon steel , null , null

SHALLOW DONOR IMPURITY IN A QUANTUM BOX - EFFECTS OF IMAGE POTENTIAL

Solid State Communications

Considering the image potential, we calculate the binding energies of a shallow donor impurity placed on the centre of a quantum box using the variational approach. The results we have obtained show that there is a great difference of the effects of image potential bet...

关键词: well;gaas-ga1-xalxas;states

617合金的组织稳定性

杨权 , 谭舒平

钢铁

对先进超超临界燃煤发电机组锅炉高温部件候选材料617合金在750℃下时效1000,2000,3000和5000h后试样的组织稳定性进行了研究.通过OM,SEM,TEM和X射线衍射等方法对时效后晶界及晶粒内的析出物进行了分析.研究发现,时效...

关键词: 先进超超临界 , 组织稳定性 , 合金 , 析出相

Creep-fatigue interaction properties of nickel-based superalloy 617

Kazuo KOBAYASHI

金属学报(英文版)

High-temperature fatigue properties were investigated for a nickel-based superalloy 617 as a typical candidate material for high-temperature components using an advanced ultra super critical (A-USC) power plant. Creep-fatigue data obtained by strain-controlled tests at...

关键词: A-USC power plant

EFFECTS OF SPECIFIED BLANK SIZE ON BODY WRINKLING DURING HYDRODYNAMIC DEEP DRAWING OF TAPERED RECTANGULAR BOX

L. H. Lang , D. C. Kang , S. H. Zhang , Z. R. Wang , S. J. Yuan , K. B. Nielsen and J. Dancket 1) Department of Materials Engineering , Harbin Institute of Technology , Harbin 150001 , China 2) Aalberg University , Denmark

金属学报(英文版)

In this paper, the forming features of tapered rectangular box during hydrodynamic deep drawing are studied by means of FEM.The effect rules of square blank corner corner amount on body wrinkling are recognized and corresponding methods are discussed. At last, the resu...

关键词: sheet metal forming , null , null

Effect of Variable Blank Holder Force on Rectangular Box Drawing Process of Hot-galvanized sheet Steel

Qunqiang FU

材料科学技术（英文）

At first, a series of finite element method (FEM) simulation tests were used to find the critical forming conditions of hot-galvanized sheet steel during the rectangular box drawing processing when constant blank holder forces were applied. According the test results, ...

关键词: Drawing process , 变压边力 , 热镀锌钢板

Introduction to atmospheric corrosion research in China

Science and Technology of Advanced Materials

In this paper, we introduce the research on atmospheric corrosion in China. We describe the climate characteristics and the classification of atmospheric corrosivity across the whole country. We also describe the rusting evolution under simulated wet/dry cyclic conditi...

关键词: atmospheric corrosion;corrosivity;rusting evolution;weathering steels;rust;mechanism;so2;o-3;no2

超超临界电站用617合金的组织特征及平衡相析出规律

吴赟 , 王珏 , 董建新 , 张麦仓

稀有金属材料与工程

617合金是700℃以上超超临界燃煤电站的备选材料,具有优越的高温持久和耐氧化性能.本文利用热力学计算软件Thermo-Calc及相应的Ni基数据库,对617合金的平衡析出相规...

关键词: 617合金 , 超超临界 , y'相 , 碳化物

700℃超超临界锅炉管用617B合金时效组织演变

江河 , 董建新 , 张麦仓 , 姚志浩

稀有金属材料与工程

研究了700℃超超临界锅炉管用617B合金在720℃/10 000 h、800℃/2000 h和850℃/100 h时效和不同温度50h时效过程中组织稳定性及力学性能变化.结果表明:617<...

关键词: 超超临界 , 时效 , 组织稳定性

Recent Advances of Laser Coating Technology in China

LIANG Yong LI Ruiguo Institute of Metal Research , Academia Sinica , Shenyang 110015 , ChinaInstitute of Corrosion and Protection of Metals , Aademia Sinica , Shenyang , 110015 , China

材料科学技术（英文）

Recent advances in laser coating technology including laser cladding,laser surface alloying and laser vapour deposition in China are reviewed in this paper....

关键词: laser , null , null , null , null