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  1. 21

    Influence of Hot Rolling Process on Microstructure and Properties of Low-strength IF Steel by Liu Gan, Ai Chengshen, Li Jiangwei, Kong Xianglei, Wang Yang, Huang Minghao

    Published 2025-02-01
    “…The results show that the microstructure of hot-rolled IF steels in the austenitic zone was equiaxed grains, while the grains of hot-rolled IF steel in the ferrite zone are elongated and fibrous along the rolling direction; Compared with the austenitic zone hot rolling process, the optimum process parameters for ferrite zone rolling are heating temperature 1 150 ℃+final rolling temperature 800 ℃+coiling temperature 720 ℃, in which the yield strength Rp0.2 is significantly reduced, and the size of precipitated phases is overall larger by 70-85 nm, but there is no significant difference in the size of TiN precipitated phases; In terms of texture, cold-rolled annealed IF steel γ texture is stronger, and the orientation distribution of each component in the main texture is more concentrated with smaller differences in strength.The corresponding r value increases by 0.64, while the △r value decreases by 0.35, significantly improving its deep drawing formability. …”
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    INSTRUMENT ASSESSMENT IN STUDENT LEARNING OUTCOME FOR FACTUAL AND CONCEPTUAL HOTS ON SCIENCE EDUCATION by Endang Widi Winarni, Endina Putri Purwandari, Rinto Hartono

    Published 2024-04-01
    “… ABSTRAK   Tujuan penelitian adalah memberikan gambaran kepraktisan HOTS faktual dan konseptual sebagai alat penilaian dalam konteks pendidikan IPA, serta profil hasil belajar siswa. …”
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    Microstructure and texture development in (FeCoCrNi)94Al2Ti4 alloy processed by asymmetric hot-rolling by Guojun Cai, Yanru Huang, Yongquan Qing, R.D.K. Misra

    Published 2025-01-01
    “…Microstructure and texture development in (FeCoCrNi)94Al2Ti4 high-entropy alloy were investigated by adopting asymmetrical hot rolling (ASHR) technology proceeded different velocity ratio. …”
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    Assessment of Replacing Gas Boilers with Heat Pumps for Hot Water Preparation in Car Washes by Talaba Ovidiu, Serban Alexandru, Hiris Paul Daniel, Balan Mugur Ciprian

    Published 2025-01-01
    “…It was considered heat pumps with R744 and with R290 as refrigerant, and it was proved that even heat pumps that seem to be undersized at negative temperatures, can still provide the required heat for 70 % of the full operating time. …”
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    Cognitive Performance in Hot-Humid Environments of Non-Air-Conditioned Buildings: A Subjective Evaluation by Hui Zhu, Yichao Wang, Da Yuan, Kun Gao, Quanna Liao, Masanari Ukai, Fan Zhang, Songtao Hu

    Published 2024-12-01
    “…In order to explore the relationship between cognitive performance and subjective responses of subjects to hot-humid exposure, a 150-min experiment was conducted in four hot-humid experiments, during which five kinds of cognitive tasks were administered to simulate the sustained mental workload. …”
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