Lianlian Wu

Corrosion fatigue performance of modified 17-4PH in simulated geothermal environment

Zhipeng Li, Min Sun, Hongguang Zhang, Weiwei Xu et autres

Corrosion fatigue behavior of a new candidate material for geothermal turbine blade, modified 17-4PH, was investigated in detail. The environmental acceleration of crack growth rate was discussed in terms of∆K. Fracture surface and side surface were observed by SEM. The crack path …

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Effects of Reversed Austenite on EAC Susceptibility of 17-4PH Stainless Steel in Simulated Geothermal Environment and Its Mechanistic Understanding

Lianlian Wu

ウー リアンリアン 氏名 WU LIANLIAN 研究科，専攻の名称 東北大学大学院工学研究科(博士課程) 機械システムデザイン工学専攻 学 位 論 文 題 目 Effects of Reversed Austenite on EAC Susceptibility of 17-4PH Stainless Steel in Simulated Geothermal Environment and Its Mechanistic Understanding(模擬地熱環境における 17-4PH ステ ンレス鋼の環境助長割れ感受性におよぼす逆変態オーステナイトの 影響とその作用機構に関する研究)

Effect of Reversed Austenite on the Stress Corrosion Cracking of Modified 17-4PH Stainless Steel

Lianlian Wu, Yoichi Takeda, Tetsuo Shoji, Mitsuo Yamashita et autres

A study has been conducted investigating the effect of reversed austenite on the stress corrosion cracking property of a chemically modified 17-4PH with specially designed two-step tempering in a simulated geothermal environment. Two specimens with very similar 0.2% proof stress and different …

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A Comparison of Stress Corrosion Cracking Susceptibility of Steam Turbine Blade Materials for Geothermal Plants

Lianlian Wu, Yoichi Takeda, Hiroki Morita, Tetsuo Shoji

In order to evaluate the environmentally assisted cracking (EAC) susceptibility of three possible alloys, 16Cr-4Ni, 12Cr, and 13Cr, to be used as turbine blade materials for a geothermal power plants, corrosion fatigue tests were performed in simulated condensed geothermal environment without H2S. …

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The Influence of Tempering Treatment on the Microstructure Evolution and Corrosion Resistance of Precipitation Hardening 17-4 Stainless Steel

Lianlian Wu, Yoichi Takeda, Tetsuo Shoji, Mitsuo Yamashita et autres

Precipitation hardening (PH) 17-4 stainless steel is first subject to solution annealing and subsequently to a specially designed two-step tempering treatment: at 835°C for 1 h and then at 620°C for 0.5 h up to 8 h. Microstructure after tempering treatments is …

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早期妊娠因子はCD4+CD25+制御性T細胞の生成および機能を増強する

Chen Quangang, Zhu Xiaorong, Chen Renjin, Liu Jing et autres

Corrosion Behavior of Nickel Base Alloy 800H in High-temperature and High-pressured Water

Zhao Shen, Lianlian Wu, Lefu Zhang, Zhengang Duan et autres

Present Condition and Development of Grain Hardness Measure Technology

Lianlian Wu, Zuo Song, Qiu Leiming

Grain hardness measure technology is one of problems in present farming.In this paper a detailed account of important significance about grain hardness measurement was given,and some grain hardness measure technologies were systemically introduced.The present condition of grain hardness measure technology was in …