Pengaruh Kadar Magnesium terhadap Ketangguhan Aluminium Alloy Foam yang Menggunakan CaCO3 sebagai Blowing Agent dengan Uji Impak dan Foto Mikro

The process of makingaluminumfoamblowing agentwithCaCO3throughmeltmethodbasedlarge-scale processwithlessthanTiH2blowing agentwhich is a compoundgas producerthat has beenused commerciallyand has been widelyusedin the industry.With areview of the literaturerelated to thematerialpropertieson the detailsof cell structureintact. The purposeof this study to testthe impactandthe photographon aluminummagnesiummicrofoam.By addingmagnesium levelscan create multiplevariablesformagnesiumlevelscanalsoaffect the strength ofthe productas well asphysical properties.Conclusion Theresults ofthis study indicatethat the fewerthe betterlevels of magnesiumdistribution ofpores sothe small theenergy absorbed.Thenthe resultsofthe micropicturelooksthe addition ofmagnesiumto the aluminumfoammicrostructurewill result inaform ofdark blacklineshowsthe elementmagnesiumparticlesandgrayindicatesaluminum.As well asproductswith4%magnesiumlevelshavepore distributionorcellaluminumfoamevenlyspread, different levels of magnesiumproducts6%and 8% have unevenporesand just lookedatsome partsdo nothavepores.So alsowith the energyabsorptionofaluminummagnesiumfoamwith4%magnesiumlevelsare 12.4 Nm,6% is 15.94 Nmand 8% is16.54 Nm. Fromthe resulting productis known thataluminumwith4%Mglevelshavebrittle fracturewhen comparedwithaluminumMgcontent of6%and 8%.102 HalamanSkripsi Sarjan

P-T evolution of metapelites from the Bajgan complex in the Makran accretionary prism, south eastern Iran

The Bajgan Complex, one of the basement constituents of the arc massif in Iranian Makran forms a rugged, deeply incised terrain. The complex consists of pelitic schists with minor psammitic and basic schists, calc silicate rocks, amphibolites, marbles, metavolcanosediments, mafic and felsic intrusives as well as ultramafic rocks. Metapelitic rocks show an amphibolite facies regional metamorphism and contain garnet, biotite, white mica, quartz, albite ± rutile ± apatite. Thermobarometry of garnet schist yields pressure of more than 9 kbar and temperatures between 560 and 675 °C. The geothermal gradient obtained for the peak of regional metamorphism is 19 °C/km, corresponding to a depth of ca. 31 km. Replacement of garnet by chlorite and epidote suggest greenschist facies metamorphism due to a decrease in temperature and pressure through exhumation and retrograde metamorphism (370–450 °C and 3–6 kbar). The metapelitic rocks followed a ‘clockwise’ P–T path during metamorphism, consistent with thermal decline following tectonic thickening. The formation of medium-pressure metamorphic rocks is related to presence of active subduction of the Neotethys Oceanic lithosphere beneath Eurasia in the Makran