title: Effect of α+β solution treatment and aging on the performance of powder forged Ti-5Al-2.5Fe

authors: Bolzoni, Leandro

subjects: Titanium alloys

abstract: Amongst titanium alloys, the α+β Ti alloys are the ones with the best compromise between strength and fracture toughness. However, the applicability of α+β Ti alloys is limited by their higher cost compared to other structural metals. Reduction of the cost can be obtained using cheaper alloying elements and creative manufacturing processes. This study aims to investigate if α+β Ti alloys can be produced at lower cost using powder forging and to understand the effect that the post-forging α+β solution treatment and aging have on the microstructure and mechanical properties. We demonstrate that the proposed approach is a viable alternative to manufacture α+β Ti alloys and that the chosen forging temperature (i.e. thermal history) is critical for producing high-strength ductile alloys. The microstructural modification induced by the α+β solution treatment and aging generally increases both the strength and the ductility, but the actual improvement is still dictated by the conditions used to thermomechanically deform the α+β Ti alloy.

text: Effect of α+β solution treatment and aging on the performance of powder forged Ti-5Al-2.5Fe Amongst titanium alloys, the α+β Ti alloys are the ones with the best compromise between strength and fracture toughness. However, the applicability of α+β Ti alloys is limited by their higher cost compared to other structural metals. Reduction of the cost can be obtained using cheaper alloying elements and creative manufacturing processes. This study aims to investigate if α+β Ti alloys can be produced at lower cost using powder forging and to understand the effect that the post-forging α+β solution treatment and aging have on the microstructure and mechanical properties. We demonstrate that the proposed approach is a viable alternative to manufacture α+β Ti alloys and that the chosen forging temperature (i.e. thermal history) is critical for producing high-strength ductile alloys. The microstructural modification induced by the α+β solution treatment and aging generally increases both the strength and the ductility, but the actual improvement is still dictated by the conditions used to thermomechanically deform the α+β Ti alloy.

year: 2023-12-31

title: Recollecting and reflecting on feminist geography in Aotearoa/New Zealand and beyond

authors: Longhurst, Robyn

subjects: feminist geography

abstract: Over the past three decades feminist geography and the concept of gender have been deployed unevenly by geographers in Aotearoa/New Zealand. A politics of knowledge production means that feminist geography occupies both the centre and the margins of academic knowledge. In order to highlight the diversity of feminist geographical knowledges we pay attention to local, regional, national and international contexts. First, we begin by positioning ourselves as working in the geography programme at the University of Waikato. Second, we review the directions taken at other universities in Aotearoa/New Zealand. Third, we examine a number of key international organisations that have been important in supporting geographers and others who share a focus on space and gender. In the fourth and final section we suggest strategies for strengthening feminist geography in the future.

text: Recollecting and reflecting on feminist geography in Aotearoa/New Zealand and beyond Over the past three decades feminist geography and the concept of gender have been deployed unevenly by geographers in Aotearoa/New Zealand. A politics of knowledge production means that feminist geography occupies both the centre and the margins of academic knowledge. In order to highlight the diversity of feminist geographical knowledges we pay attention to local, regional, national and international contexts. First, we begin by positioning ourselves as working in the geography programme at the University of Waikato. Second, we review the directions taken at other universities in Aotearoa/New Zealand. Third, we examine a number of key international organisations that have been important in supporting geographers and others who share a focus on space and gender. In the fourth and final section we suggest strategies for strengthening feminist geography in the future.

year: 2015

title: Early intervention services: Effectively supporting Maori children and their families

authors: Berryman, Mere

subjects: Early Childhood

abstract: This paper examines Early Intervention (EI) service provision from within one Ministry of Education region in New Zealand. It does this in order to better understand what works well and what needs to change if children from Maori families, of Early Childhood age, are to be provided with the most effective EI services. By engaging with Maori families in group-focused interviews-asconversation, and then with their service providers, about their experiences of working together, researchers learned about what could provide effective services for other Maori families in similar situations.

text: Early intervention services: Effectively supporting Maori children and their families This paper examines Early Intervention (EI) service provision from within one Ministry of Education region in New Zealand. It does this in order to better understand what works well and what needs to change if children from Maori families, of Early Childhood age, are to be provided with the most effective EI services. By engaging with Maori families in group-focused interviews-asconversation, and then with their service providers, about their experiences of working together, researchers learned about what could provide effective services for other Maori families in similar situations.

year: 2011