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Item Phase stability and tensile properties of metastable β-Ti alloys for orthopedic applications designed using electronic parameters(2025-11) Makhatha, ME; Raganya, Mampai L; Makoana, Nkutwane W; Phasha, MThe design and development of metastable β-Ti alloys with non-toxic elements that are used in the manufacturing of orthopedic implants are gaining significant research attention. In this work, two metastable β-Ti alloys, binary alloy of Ti-17Mo wt% (referred as Alloy A) and ternary alloy of Ti-16.5Mo-1.1Fe wt% alloy (referred as Alloy B) were designed with different values of electronic parameters such as the Molybdenum equivalence (Moeq), electron to atom ratio (e/a), and the Bo-Md. The contribution of the electronic parameters in influencing the formation of phases and the elastic modulus is discussed. Phase characterization and tensile properties of the alloys after solution treatment at 1100 °C and quenched in ice-brine were carried out using different techniques. The X-ray diffraction (XRD) patterns and optical microscopy (OM) micrographs showed that with increasing e/a ratio the β phase stability increases. EBSD phase maps showed the decrease in the volume fractions of α″and ω phases upon addition of Fe. With increase in stability of β phase, the ultimate tensile strength (UTS) and elastic modulus decreased from 912 MPa to 540 MPa and 82 GPa to 73 GPa in Alloy A and Alloy B, respectively. On the other hand, the increase in the β phase stability resulted in increased hardness from 366 Hv0.5 for Alloy A to 428 Hv0.5 in Alloy B. Using scanning electron microscopy (SEM), a combination of cleavage facets and dimpled structure were observered in both alloys.Item CSIR Annual report 2024/25(CSIR Communication, 2025-08-22) CSIR CommunicationThe CSIR’s leadership has embraced challenges with determination. Through innovation, agility and strong values, the organisation continues to deliver meaningful impact. The Board remains confident in the strategic direction set by management and will continue to support the CSIR in building a future-focused organisation that serves all South Africans. On behalf of the Board, I wish to thank the Minister of Science, Technology and Innovation, Dr Blade Nzimande, for his guidance and continued support. I also thank my fellow Board members for their dedicated oversight and strategic contributions. Most importantly, I extend my deepest appreciation to the executive leadership and the entire CSIR staff. Your excellence, integrity and drive are what make the CSIR a beacon of innovation in South Africa and beyond. As we look to the future, we do so with optimism and purpose. We are building on 80 years of science that touches lives — and we are ready to shape the next era with bold, inclusive innovation.Item CSIR Annual report 2021/2022(CSIR, 2022-10-14) CSIRCSIR’s 2021/2022 Annual Report serves two purposes. Firstly, as is customary and legislated, it accounts for the organisation’s use of its resources, from financial and human to infrastructure, and the prudent governance of the myriad building blocks that contribute to achieving its mandate.Item CSIR annual report 2020/21(CSIR publishers, 2021) CSIRThe CSIR’s strategic objectives are well defined and guide the organisation’s research, development and innovation investments and activities.Item CSIR annual report 1977(CSIR publishers, 1978-05-01) CSIRThis report presents the thirty-third annual report of the Council for Scientific and Industrial Research. The report covers the period from the 1st January, 1977 to the 31st December, 1977, which coincides with the end of the Council’s financial year. Balance sheets and statements of income and expenditure for the financial year ended 31st March, 1977, certified by the Controller and Auditor-General, are included.Item CSIR annual report 1956- 1957(CSIR publishers, 1957-04-01) CSIRThe CSIR annual report published 1956 to 1957.Item CSIR annual report 1978(CSIR publishers, 1979-04-01) CSIRThe CSIR annual report published for the year 1977.Item CSIR annual report 1982(CSIR publishers, 1983-04-01) CSIRThe CSIR annual report published for the year 1982.Item CSIR annual report 1975(CSIR publishers, 1975-01-01) CSIRThe CSIR annual report published for the year 1975.Item CSIR annual report 1996(CSIR publishers, 1996) CSIRThe CSIR annual report published for the year 1996.Item CSIR annual report and technology impact 1995(CSIR publishers, 1995) CSIRThe CSIR annual report published for the year 1995.Item CSIR annual report 1979(CSIR publishers, 1980-04-01) CSIRThe CSIR annual report published for the year 1979.Item CSIR annual report 1985(CSIR publishers, 1985) CSIRThe CSIR annual report published for the year 1985Item CSIR annual report 1983(CSIR publishers, 1983) CSIRThe CSIR annual report published for the year 1983.Item CSIR annual report 1984(CSIR publishers, 1984) CSIRItem CSIR annual report 1997(CSIR publishers, 1997) CSIRThe CSIR annual report published for the year 1997.Item CSIR annual report 1974(CSIR publishers, 1974-01-01) CSIRThe CSIR annual report published for the year 1974.Item CSIR annual report 1973(CSIR publishers, 1974-05-01) CSIRThis report covers the period 1st January 1973 to 31st December 1973.Item CSIR annual report 1957 - 1958(CSIR publishers, 1958-04-01) CSIRThe CSIR annual report published 1957 to 1958.Item CSIR annual report 1955 - 1956(CSIR publishers, 1956-08-17) CSIRThe CSIR annual report published 1955 to 1956.