Many roads to flexibility. How large firms built autarchic regional production systems in France

This paper discusses the adjustment of large firms in France, in particular how they regionalized their production structures in the 1980s. Throughout the "Golden Age," large firms had geographically reorganized their activities: strategic planning remained in Paris, while the actual production was decentralized into the provinces, primarily to address cost and labour conflict issues. When the large firms faced a profitability crisis in the 1980s, and the traditional state-financed way out of the problems was no longer available, they saw in these proto-regional production systems a chance to become more competitive. They relied on the decentralization policies of the governments in the 1980s, and used the second-order effects of the new policies as a means to modernise their own operations

Microstructure and microhardness of an Al-6061 metal matrix composite processed by high-pressure torsion

Disks of an Al-6061 metal matrix composite, reinforced with 10 vol.% Al2O3 particles, were processed by high-pressure torsion (HPT) at room temperature for 1/4, 1/2, 1, 5 and 10 turns under an applied pressure of 6.0 GPa. The evolution of microstructure was investigated using optical microscopy and scanning electron microscopy. During HPT processing the average grain size within the aluminum matrix decreased from ? 35 ?m in the unprocessed condition to ? 170 nm after processing through 10 turns but there was no significant effect on the size and distribution of the alumina particulate clusters. The values of the Vickers microhardness were recorded across the surface of each disk and then plotted as two-dimensional and three-dimensional color-coded contour maps. The results show the hardness increases from ? 56 Hv in the initial condition to ? 165 Hv after HPT for 10 turns. The results demonstrate that, as in many unreinforced metallic alloys, the evolution of hardness with strain exhibits strain hardening without any significant recovery