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SIMULATION OF ROLLING TEXTURE OF ALUMINUM WITH lath MODEL

中国有色金属学会会刊：英文版 1999年第2期9卷 103-107页

作者： Chen, Zhiyong Zhang, Xinming Zhou, Zhuoping Li, Saiyi Yang, Yang Central South Univ of Technology Changsha China

１ＩＮＴＲＯＤＵＣＴＩＯＮＩｔｉｓｗｅｌｋｎｏｗｎｔｈａｔｔｅｘｔｕｒｅｉｓｏｎｅｏｆｔｈｅｍｏｓｔｉｍｐｏｒｔａｎｔｐａｒａｍｅｔｅｒｓｗｈｉｃｈｄｅｓｃｒｉｂｅｔｈｅｐｒｏｐｅｒｔｉｅｓｏｆｍａｔｅｒｉａｌｓ．Ｔ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＩｔｉｓｗｅｌｋｎｏｗｎｔｈａｔｔｅｘｔｕｒｅｉｓｏｎｅｏｆｔｈｅｍｏｓｔｉｍｐｏｒｔａｎｔｐａｒａｍｅｔｅｒｓｗｈｉｃｈｄｅｓｃｒｉｂｅｔｈｅｐｒｏｐｅｒｔｉｅｓｏｆｍａｔｅｒｉａｌｓ．Ｔｈｅｔｅｘｔｕｒｅｓｐｒｅｄｉｃｔ...

关键词： aluminumrolling textureRC lath modelminimum shear principle

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lathYROIDES, Encoding a WUSCHEL-Related Homeoboxl Transcription Factor, Controls Organ Lateral Growth, and Regulates Tendril and Dorsal Petal Identities in Garden Pea （Pisum sativum L.）

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Molecular Plant 2012年第6期5卷 1333-1345页

作者： Li-Li Zhuang Mike Ambrose Catherine Rameau Lin Weng Jun Yang Xiao-He Hu Da Luo Xin Li School of Life Science and Biotechnology Shanghai Jiao Tong UniversityShanghai 200240China Department of Crop Genetics John Innes CentreColneyNorwich NR47UHUK Station de Genetique et d'Amelioration des Plantes Institut J.P.BourginUR 254 INRAVersaillesFrance National Key Laboratory of Plant Molecular Genetics Institute of Plant Physiology and EcologyShanghai Institutes for Biological SciencesChineseAcademy of SciencesShanghai 200032China State Key Laboratory of Biocontrol School of Life SciencesSun Yat-Sen University135 West Xin-gang RoadGuangzhou 510275China

During organ development, many key regulators have been identified in plant genomes, which play a conserved role among plant species to control the organ identities and/or determine the organ size and shape. It is intriguing whether these key regulators can acquire diverse function and be integrated into different molecular pathways among different species, giving rise to the immense diversity of organ forms in nature. In this study, we have characterized and cloned lathYROIDES （lath）, a classical locus in pea, whose mutation displays pleiotropic alteration of lateral growth of organs and predominant effects on tendril and dorsal petal development. lath encodes a WUSCHEL-related home- oboxl （WOX1） transcription factor, which has a conserved function in determining organ lateral growth among different plant species. Furthermore, we showed that lath regulated the expression level of TENDRIL-LESS （TL）, a key factor in the control of tendril development in compound leaf, and lath genetically interacted with LOBED STANDARD （LST）, a floral dorsal factor, to affect the dorsal petal identity. Thus, lath plays multiple roles during organ development in pea： it maintains a conserved function controlling organ lateral outgrowth, and modulates organ identities in compound leaf and zygomorphic flower development, respectively. Our data indicated that a key regulator can play important roles in different aspects of organ development and dedicate to the complexity of the molecular mechanism in the control of organ development so as to create distinct organ forms in different species.

关键词： pea lath LST TL lateral growth organ identity.

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Effect of Ti on microstructure and strengthening behavior in press hardening steels

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Journal of Central South University 2017年第10期24卷 2215-2221页

作者： WEN Yu-hui ZHU Guo-ming DAI Si-yu KANG Yong-lin School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China State Key Laboratory for Advanced Metals and Materials(University of Science and Technology Beijing) Beijing 100083China

Effect of Ti addition on the microstructure and strengthening behavior in press hardening steels(PHS)was analyzed by optical metallography(OM),scanning electron microscopy(SEM),transmission electron microscopy(TEM)and X-ray diffraction(XRD).The results show that the microstructure of PHS is martensite,and two sizes of particles disperse in the martensite matrix during the forming and quenching *** size of the bigger particles is between 100 and 200 nm,and the small particles are *** quantity of the particles has a positive relation with the Ti *** importantly,the microstructure and strengthening mechanism are affected by the precipitating behavior of the *** the prior austenite grain,martensite packet,block and lath are refined by Ti *** steels are strengthened by the fine grains,martensite substructure and *** uniformly distributed dislocation in the martensite lath,the density of which is between 3.0?10^(14) cm^(–2) and 5.0?10^(14) cm^(–2),strengthens the steels through associating with fine carbide particles.

关键词： martensite particles prior austenite grain martensite lath press hardening steel

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Masing Behavior and Microstructural Change of Quenched and Tempered High-Strength Steel Under Low Cycle Fatigue

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Acta Metallurgica Sinica(English Letters) 2019年第11期32卷 1346-1354页

作者： Feng-Mei Bai Hong-Wei Zhou Xiang-Hua Liu Meng Song Ya-Xin Sun Hai-Long Yi Zhen-Yi Huang State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China School of Materials Science and Engineering Anhui Key Lab of Materials Science and ProcessingAnhui University of TechnologyMaanshan 243002China School of Metallurgical Engineering Anhui University of TechnologyMaanshan 243002China

Low cycle fatigue behavior of a quenched and tempered high-strength steel(Q960 E) was studied in the strain amplitude ranging from ± 0.5% to ± 1.2% at room temperature. As a result of fatigue loading, the dislocation structural evolution and fracture mechanism were examined and studied by transmission electron microscopy and scanning electron microscopy(SEM). The results showed that this Q960 E steel showed cyclic softening at different strain amplitudes, and the softening tendency was more apparent at strain amplitude of ±(0.6–1.2)% than that at ± 0.5%. The reduction in dislocation density with increasing strain amplitude is responsible for the softening tendency of cyclic stress with the strain amplitude. The material illustrates near-Masing behavior at strain amplitude ranging from ± 0.6% to ± 1.2%. The near-Masing behavior of Q960 E high-strength steel can be the result of stability of martensite lath at different strain amplitudes. Partial transformation from martensite laths to dislocation cells is responsible for the derivation from ideal Masing behavior. In the SEM examination of fracture surfaces, transgranular cracks initiate on the sample surface. Striations can be found during the crack propagation stage.

关键词： High-strength steel Low cycle fatigue Near-Masing behavior Martensite lath

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