This is not a topic I would normally write about. In particular, because I do not think Hayek was a particularly relevant theorist, even within the mainstream. By the way, that's the reason why within the neoclassical/marginalist school Austrians are sort of marginal. Note that marginal means that they are in the minority, but by no stretch of the imagination Austrians should be seen as heterodox [this is prove that Wikipedia, if you have doubts, is not entirely reliable. Again proper definition of heterodoxy means accepting that distribution is exogenous, and prices do not reflect relative scarcities, and that output and employment are demand determined in the long run, both positions that the Austrians would not accept].
But I got a few questions about Austrians and I think it is important to make one thing clear about their theory of business cycle, namely: it is not particularly different than mainstream theories, and is fundamentally Wicksellian in outlook, whether Austrians get it or not. There should be little doubt that Hayek believed that fluctuations were caused by monetary shocks, and that equilibration was based on the adjustment of a monetary rate to a natural rate [Remember his debate with Sraffa? One of the key issues in Sraffa's critique of Hayek was that he argued that latter's claim that the possibility of a difference between own rates of interest and thus a divergence of some rates from the equilibrium or natural rate is a characteristic of a money economy that is absent in a barter economy was simply wrong since there was no unique natural rate of interest from which the money rate could differ].
Even if you add his stuff on uncertainty, which many believe is close to post-Keynesian analysis, there is little in Hayek that departs from the basic Wicksellian framework [interestingly the Keynes of the Treatise shares that framework]. I should mention here that if you read Paul Davidson carefully, you would note that his concerns about fundamental uncertainty are basically related to lack of demand. When he tells you that firms do not hire workers for a lower wage unless they have demand, that means that government spending can reduce uncertainty very swiftly.
The only interesting Austrian is probably Schumpeter. Schumpeter, in contrast to Hayek, and like Wicksell, believed in real shocks, not monetary ones. Mind you, he was more interested in the sort of long term shocks caused by innovation. Still the framework is very similar, and Wicksellian in the fundamentals. Real shock (innovation) causes the spark for growth, diffusion eventually erodes the advantages of the innovators and the boom winds down. The economy moves from one circular flow, with the economy in Walrasian equilibrium to another one. So Schumpeter too is at core part of the marginalist tradition, as all Austrians are.